Funnily enough I was reading this article on sexing yesterday!
Sexing Hamsters • Hamsterific!
Yes if they have something hanging out at the back end = male
Oh that is an idea you could look on youtube how to make a wheel- some look quite easy and you sound like you know what you are doing craft/DIY wise
and yes you are not the only one waiting impatiently as Ria P also says - me too - i can't wait to see what little hammy ends up being part of your family.