Advice on stroker build with cracked cylinder

It's fun to compare the DCR of various camshafts, but to be honest I would advise not to get hung up on them. DCR rises as the rpms rise and you'll never know exactly where it reaches. I think it could be calculated but you'd need to be on an engine dyno with the sensors. Anyway as long as the efficiency is rising, the DCR is too. IMO getting to the ragged edge of usable in a package that is for a multi-use (street & strip) is asking for more problems. If you have 8:1 at cranking rpm that will peak higher, and if you're running high test from any Uncle Willy's corner gas pump the quality of fuel might be a problem fill-to-fill.
Plus, you won't have a "lazy" low rpm engine using a 4" stroker crank that ends up in the high 7s for DCR when calculated. I've built a bunch. 430-550hp they ain't lazy.