I’m certain a “racier” cam would make more power, but would limit the buyer pool for the engine some.
I actually like the XS cams…..especially with the 1.6 rockers.
While the 274 isn’t big enough to make all the power that could be had out of that long block, I think it’ll be enough to be pretty good.
Eons ago when I was building some circle track 2bbl 318’s, the cams were about 10-15deg more duration, and tighter lsa…….. but no concessions for street use.