High compression does not 'suck' more air in !! where did you get that from ? The reason turbo engines drop on compression ratio is that forced induction artificially raises compression and so can increase risk of detonation if not controlled properly.
Also dropping the CR does not allow more fuel/air into the combustion chamber !! maybe a miniscule amount but not what your talking about.
sorry to be so negative, but lets have straight facts. I've been using forced induction on cars for years.
Boosting a standard engine does have pitfalls, but as you already start with a 'standard' CR you have a reasonable amount of performance to start with, without waiting for a turbo to spool up. slightly different with a S/C as its already supplying boost.
My final set-up made close to 230hp at 10.4psi, generating 4.5psi at 2000rpm.
Drop your CR and there will be a tail-off of initial pick-up, depending on how you size your turbo(s)