Have you checked out that thread I linked? Page 5 contains a video about selecting the proper cam shaft. Since it seems you've already selected a cam, the video can still be relevant concerning heads, you'll want to match flow numbers to your cam. That cam has an advertised max lift of roughly .500, so you'll want good flow at that lift number on both sides. And again, as referenced in that thread and the heads I'm eye balling, Pro Maxx heads can be had for <$1k and flow well at those numbers. There is also someone here on the forums who has vouched for them so far. But those Pro Maxx's have been on sale in the recent past and could be had for around $800. I'm hoping they'll have a Black Friday special and drop to that price again now that I have the disposable income.
I have Trick Flow Twisted Wedges on my Cobra II with a cam that's meant more for low end torque (as per the manufacturer's description) and they perform well (as you'd expect from Trick Flow....). But you're going to spend more for them. The Pro Maxx is advertised to flow the same on the intake side at .500 and slightly better on the exhaust at .500 than the TW's. They are advertised to flow better than Edelbrocks as well. Just something to chew on.