compression with 274cam

Ok I take you don't have it built yet so that is good. If you have 273 rockers I would go solid cam. They are not a pain to set lash. I run one everyday and don't mind the noise and honestly I like it. I think you could run more compression with a few things done. One polish the combustion chambers and the pistons. Some aftermarket valves can have too much of and edge on them for my taste so watch that. Other things you can do to help out is a cold induction, plastic or wood carb spacer, lower thermo stat, 34-36 timing all in around 2800 and a proper tune on the carb(very big one).

As for cam you can run the one you picked out but I've always been a fan of the solid flat tappet. http://store.summitracing.com/partdetail.asp?part=CCA-CL20-248-4&autoview=sku

It's bigger then you need but I can't find one equal to your hydralic. If you have the extra cash have comp build you one based on the FL lobe series. Hope this helps.