Nice deal. RHPs are usually placed on one side or the other as most people that use them use them use them as the sole heat source.
And heck that's even better than what I'm selling a set up for. Got a local dealing running right now for my Pro-Line 48x23x14 HDPE cage with Pro Products PH3 65 watt RHP and Herpstat 2 for $300. Add a Herpstat 1 for $50 more. Doing it locally only as I don't want to mess with shipping. And still no bites lol. I need to scrounge up the cash to pay off 2 AP T25s I have on order lol.
And as for what to get, my vote is either a boa or SD retic morph.