If you're only housing one snake in it you can put the RHP on one side. You can't center the RHP with the divider. I don't think you'll need the screen cut outs. I only have them because I use IR heat bulbs to boost my ambient temps on both sides of the divider. I didn't wan't to order 2 RHPs when I first got my T8s (kinda wish I had now). The RHP should be ok as an exclusive heat source. You can add heat tape or a UTH in the winter if you feel the need but I doubt you'll need it. I've never used heat tape but that's what the flex watt belly heat is.