CR and pump gas question

For my 408 stroker build, I'm looking a a combination of the Scat cast crank and forged pistons kit 1-98113BI, edelbrock 60779 heads, and this Hughes cam Hughes Engines . I'm wondering if I should go with the open chamber edelbrock heads (60179) instead to help keep the CR down a little further? I'm looking at around 10.1:1 with the closed chambered heads and 9.9:1 with the open (assuming I don't need to deck the block at all, although I could use a thicker head gasket to compensate for that anyway so I'm not too worried about that). I want to be able to use pump gas. 93 is easy to get around here so I'm fine with needing that, but is that even possible at 10.1:1 with this cam? Everything seems to come together well with the parts I've picked, but this is worrying me a bit, as there aren't any sets that I can find with forged dish pistons that are higher volume. I think icon sells some, but not in any of the kits I've seen. I know CR is kind of a point of debate, but I'd like to at least know if I'm completely out of the advisable area for pump gas. Thanks.