Need Advice.....Marv? Super73?

[sav300]

I've asked many questions and read many posts on many forums, but now I've taken the time to work out the bugs on what I really want(Reality). Here is what I'm looking to get out of my hauler.

Good manners on the street with easy drivability, no excessive cam or giant stall, and healthy numbers that will allow me to hold my own at the track.

The motor has plenty of room to grow and this is what it currently has in it:

350 Bored .030 over
Forged Scat 6" rods
KB pistons (rated CR is 10.65 with 64cc heads)
Edelbrock Performer air gap intake
Edelbrock Performer cam (420/442 lift 204/214@050)
Proform Full roller 1.6 rockers
MSD ignition with all the goods
Melling high volume oil pump
ARP studs everywhere possible
Stock 305 Port and Polished heads
Stage 2 Jet rebuilt Quadrajet
Electric fans
Headman headers (1 5/8" primaries 3" collector)
2 1/2" exhaust before the tire with Flowtech After burner mufflers
And nothing, but an alternator

This all made 252HP and 320TQ at the wheels traveling through a TH350, HO72 rear end with 4.56 gears, and 33" tires in my 3/4 ton 70 Chevy. It is begging for more air as it peaked at 4900RPMs, the valves float at 5200RPMS.

I was looking at the Comp cams XE274H cam, ProComp 190cc aluminum heads(64cc chambers with 2.02/1.60 valves and dual springs good for .550 lift), Schoenfeld headers (1 3/4 primaries with 3" collector), 2500 stall converter, built TCI or B&M TH350.

With my gearing I will benefit from a cam that builds power in the higher RPMs. What I'd like to know is do you think there is any thing else I should do? Aftermarket oil pan with crank scraper, high flow water pump, etc.? Does my expectations and list sound reasonable?

Thanks for the help and input,

Thomas