What are the practical limits to the stock Magnum Rocker package?

Hey guys gonna start building my engine soon. I know the stock La rockers are pretty good, they may not be accurate enough for some of the hardcore, but they can be plenty stout and reliable! Had them in a 360 years ago with a .509 lift cam and spun it to 6000 rpm all the time, with no problems! My question is how far can I push the stock Magnum rockers in a similiar package. Hughes has spec'ed thier 2228 hydraulic roller cam to me, for my La block/eq magnum head combo. The lift with a 1.6 rocker is .544. Assuming the mods made to the spring seats, and the proper springs, will my stock magnum rockers hold-up? This is going to be a daily driver, with 10-1 ish comp(flat-tops and mag chambers), hi-po exhaust manifolds, performer intake, and TQ carb, with a recurved stock ignition. Thank you. Dan:banghead: