Stock rollers/aftermarket cam

Truth be told, the magnum hyraulic rollers are very good and will take a LOT of abuse.
I am living proof!!!! You can reuse them over and over again too as long as they hold oil and the roller bearings operate smoothly, I wouldnt worry about it. Clean them up nice and run 'em...or get brand new ones from mancini for around 120-140 bucks, something like that. They're cheap, and they hold up just fine. The beauty of an OE hytdraulic roller block is that the OE lifters are cheap and good stuff, as opposed to the retrofits that are pretty expensive.

Also, you can get a lot more lift than that by going to a decent lift cam and then stepping up the rocker ratio...only limit is piston to valve and how the head is set up.