If your Steve really is a roo, i would think by 7 months he would start developing a larger comb and tail feathers. Once our 2 Buff Orpington roos started developing a larger comb, they got a lot bigger than our Buff pullets, walking more errect, with long thin frathers on their necks. Interesting thing, the dominant roo (we call him Roo 1) is bigger than the other one (Roo 2). Roo 1 crows and Roo 2 doesn't crow. If Roo 2 starts to go after one of the girls, Roo 1 chases him away - every time.
If Steve is not Steve, but rather Stella, one would think she would be laying by now. As a general rule, pullets will start laying by around 6 months. Heavy breeds, like Orps, could start later. However, if you recently got Steve, and HE is Stella, SHE might be delaying the start if laying due the stress of the move. We got 5 Red Sex Link laying hens a month ago. It took a full 2 weeks for them to start laying again.
So, in the end it's possible you will have to wait a bit longer to find out if your Orp is Steve or Stella.