360 cam / valve train help / choices

I have huge confusion surrounding camshaft choices and limitations!
My 360 has been punched .030
KB-107 pistons
rods resized
crank turned .010-.010
Currently being balanced
Plan to run a 904 tf
Use my variable rate already purchased rhoads lifters
72 J heads with the 1.88 valves w/ factor rocker shafts thus far.(heard they flow high 180's-190's, don't really know.) ?Head flow can / will be a limiting hp factor? 2xhead flow for max hp?
Assuming compression will be 10.5 +/- Dont know actual static until I mate my new parts
LD-340
Camshaft- Help.

Looking hard at some of the 60401-4 Lunati's, comp's 262/268's. Maybe even one of the ridiculed thumper lines.

? At what point do you need to run adjustable valve train?

What is the big concern here? Is it valve geometry?
Will the rocker arm interfere with the spring nocking off one of the valve keepers / retainers? Don't want that.

Please help straiten me out here. Studied about as far on my own before making this thread.

Thanks in advance.