New Ap 10 came today!

If the RHP is filling 1/2 the cage, not positive from your photo but it appears so, then you would have little to no temperature gradient. You can comfortably house a small snake in a large enclosure if you provide plenty of hides and ground cover (fake plants/vines, etc.).

I've got 5 T10's, a T8, and a T12 and really appreciate the quality and ease of use AP offers with their enclosures. Not to mention the incredible customer service.

Pro Products RHP's may/may not weigh more than RB's, I don't know as I only use PP, but all 7 of my PP install with 2 screws. It's not a matter of weight it's more what size RHP and where it's installed - I'm actually using a divider right now with one of my T10's that has 2-40W RHP's in it. Temp gradient is fine for a small snake.

Good luck with yours - it looks great already!