Don't get me wrong, when I say I went with a more 'mild' cam, it's all relative to where you been! I went from a solid roller cam 3500 to 7000 rpm range to a 2300 to 6200 rpm range cam. My intake and heads will certainly flow more than my cam, so the cam is my current 'bottle neck'. Nice 'lumpy' idle, sounds 'bad to the bone' and still pretty darn quick. The big ports (intake and heads) could be better optimized for 'street' use. Comp Cams 292S flat tappet, but that was for an FE.
Heres the key question: What peak rpm range do those AFR185 heads like? At what rpm do THEY start to 'fall off'? No point in getting a bigger cam than the carb\intake\heads\headers will support.