Bigger cam or not bigger cam

[Newt408]

bigger cam or not bigger cam that is the question. Im thinking about going with a bigger cam but wanted you fellers input. Heres my setup now.
sb 400 .040 over
30cc dish pistons on 5.7" rods-9.25-1 compression
vortec heads
xe-268 cam
edelbrock performer rpm intake
holley 670 street avenger carb
msd ignition box, coil and recurved distributor
stock fuel pump-about to remedy that
1 5/8 headers to 2 1/2" duals to 40 series flowmasters
BTO 2004r w/2200stall
3.70 gears
295/50s
Anyway i'm thinking of going with the xe 274 cam. Ive got the heads off right now going to get the valve guides clearanced like i should have in the first place but didnt know i needed to until about a year after i built the engine. Its usually better to know these kinds of things beforehand. Anyway this is my daily driver but I sure like to embarass the teenagers in their nice new mustangs their daddys bought them.