I’d guess you don’t need deep section for most lower level bunch road races. You’ll be in a group, probably finishing with a bunch sprint in my experience so the aero advantages are minimal.
There are a lot of pace changes if you are not at the front. So any improvement in acceleration is an advantage. On open roads you may find the signalling coming back is not that great and given the extra speed you may find you hit more holes and stones that you would do on a well organised club run.
Fulcrum 7s will be fine. I raced for ages on Aksiums. If you want new wheels I really rate the RS80s been running them for 2 summers as my only set of wheels. Strong enough to cope with potholes and light. Deep section look pretty, planet x have some. Carbon rims can be sketchy especially in the wet. Tubs can be a faff. I did look at the aluminium braking surface deep section options but stuck with what I have.