For this 5 minutes I think I want to have it a bit more sedate to make it managable (read that "drivable") for working out the bugs. If I want to go bigger on the cam later I will have to look at gearing it different anyway so, lets keep things low key to begin with then, when I want more, I'll have room to grow.
You have the specs for the current cam. Lets work up some numbers with your recommended cam and lifter package and we'll go from there. Sound like a plan?