a) Even prismatic shields on an Adder still give only pitiful amounts of shielding, so I'm no more convinced on such a small platform which has to be as lightweight as possible are useful. Better make use of silent running and lightweigh chaff/ speed / heatsinks /silent running. Your survival chance will propably be bigger.
Note: a d-rated navigational deflector shield (for landing hazards) still makes sense. Also yes I love Star Trek.
b) Also I'm not convinced neglecting speed is an optimal survival strategy in an Adder. I can't comment on the scoop/heat problems
@Northpin noted, as my own Adder with EPTs didn't have scooping issues as far as I remember, but not sure on this one. Having 100 m/s speed advantage compared to a Meta FdL is definitely more advisable then having a 100 m/s speed deficit.
I'd prefer such a build:
https://s.orbis.zone/5kvt
with plasmaHammer
A ship builder, outfitting and comparison tool for Elite Dangerous
s.orbis.zone