No there will be no rex and no long haired UNLESS the female carries the gene for rex and long hair.
To be long haired you need two genes for long hair so lhlh one from each parent. The male is lhlh so he will give one. The female may be a carrier lh- but you don't know as you don't have a pedigree.
Same with rex. The male is rxrx (if he is rex though I'm not 100% on that)
The satin is dominant so you only need one satin gene to be satin so he is Sasa (note the capital letter for dominant. SaSa hamsters can have thin sparse coats so don't breed this. Some of his offspring will get the Sa gene and some will not.
You can read some basic genetic info here:
Genetics and Inheritance