You must take the fluffy bedding out now! It's dangerous. There are petitions all over to ban it but unfortunately pet shops keep selling it. They can pouch it, swallow it and die from blockages or get it tight round their legs and need an amputation. All sorts of horror stories. The straw stuff doesn't sound great either, but for now take the fluffy bedding out and give him a big pile of torn up strips of plain white toilet paper.
I'm sure he'll be ok with the little wheel for a few days. Better than no wheel at all as they need their wheels
How big is Brian? Some Syrians grow quite large and others stay quite small. The Barney is a good cage and is more affordable. I would still get the 28cm wheel at the same time if you can manage it.
I would go for the Barney and spend the difference on toys and a wheel
Toys - most toys sold for hamsters tend to be either dangerous or fall apart or too small! There are some good ones, but you want to avoid hanging toys with chain (toes get caught and they end up hanging by a broken leg). Sputniks are good (like plastic hammocks). Rat sized tubes and sputniks are best for Syrians - more room for them to move about in. Zooplus sell some good basic ones if you wanted to get them at the same time as the cage. The coconut sounds ok if it wasn't hanging too high and if the entrance hole is big enough. I would suggest hanging it over the shelf. Anything with an entrance hole needs to be at least 6cm diameter so they don't get stuck. A lot of toys are for dwarf hammies and have tiny holes in.
Hammocks - it depends if they chew them - fleece shouldn't really be used in the cage as if they chew them it can cause blockages too. I wouldn't try any fabric hammocks just yet. Zooplus sells a grass hammock - it can have the odd spiky bit on but they can be snipped off. I'll add a list of toys I think are safe/good
This is good next to or over a shelf
Tunnels & Dens: Sputnik Hanging Den | Small pet accessories at zooplus
These are quite big but make good floor toys/tunnels - it means the hamster can feel safe running from one end to the other if they're a bit shy at first plus it's an interesting texture to climb over.
Tunnels & Dens: bargain prices at zooplus: Trixie Cork Tunnel
These are good for in the cage or out of cage toys. It's a tunnel that extends and is stretchy and can be bent into different shapes. Mine had sharp plastic bits on the edges so snipped those off.
Trixie Extending Play Tunnel for Small Pets| Free P&P £29+ at zooplus!
This is great - it's a big long tube. You can tie it to the bars. Don't use the chains though. You can get a ball of sisal string on ebay for tying things on. Sisal string is safe to chew but other string isn't. Or you can just have it as a floor toy, or fasten it onto the side bars with cable ties.
Savic Play Tunnel Giant Tube | Great deals on small pet accessories at zooplus!
These are very popular and useful. Bendy stick bridge. You can have it as a tunnel, a hide, something to run over or as a ramp or ladder up to something. The small and medium sizes are both good. I would get one of each if nothing else. The small one makes a good tunnel over the house entrance. That makes the house dark inside and also makes a ramp up to the roof of the house. If you don't get any other toys, get a couple of bendy stick bridges
They need checking for any sharp bits as well - snip them off.
Wicker Bridge for Small Pets at zooplus
This is the grass hammock
http://www.zooplus.co.uk/shop/small_...es/mats/204595
This was our Syrian's favourite toy. Hyacinth tunnel. The small size is right for a Syrian. It's chewable, has no sharp bits and has holes on the side they like going in and out of. So bendy bridges and this if nothing else
https://www.amazon.co.uk/d/Small-Ani...yacinth+tunnel
This is the potty litter tray I used. It's easy for them to get in and out of. Ours used to pee in the back corner and sit in the front part and have a wash - it was his little bathroom. You put Chinchilla bathing sand in it and put it where they choose their wee spot to be. If you put it anywhere else they don't use it - they choose the wee spot lol.
https://www.amazon.co.uk/d/Houses-Ha...=Hamster+potty
It's a good idea to have a sand bath as well. Some Syrians like them, some don't bother. A plastic ice cream tub is fine, just sit it on the substrate with the Chinchilla sand in it.
This is the Chinchilla bathing sand. I get 2 at a time to save on postage - you can get it from Viovet as well. It lasts quite a long time as you only need to empty the potty about every 5 to 7 days and the sand bath not very often.
https://www.amazon.co.uk/Supreme-Pet...a+bathing+sand
That's a bit of a list. I would get the coconut you like (if the hole is big enough), a couple of bendy bridges, the rat sputnik, hyacinth tube, potty and chinchilla sand to start with - and maybe the cork log as that helps fill the floor space up and makes it interesting.
You could also make some of these
https://www.youtube.com/watch?v=NuPeyD6w-CI&t=45s
You can use all sorts as toys. Old tissue boxes, cardboard tubes from inside kitchen rolls (you slit them down the side so they can't get stuck), cardboard egg boxes - sometimes they like chewing or ripping up cardboard.