vtec isn't good for boost cause it has a lot of overlap (intake and exhaust valves open at the same time). it's not ideal for turbo, but it's not that big of a deal either. all the real fast cars at the drag strip are using vtec motors, and i'm pretty sure they are all enabled.
as for the 4 small chargers i don't think it's a good idea right off the bat, plus you'll have 4 things which the motor has to turn, even thought they are small the motor still has to power 'em.
i'm not a fan of superchargers for honda's mainly cause we don't have the low end grunt to have a blower got with turbo it's mroe efficient for us honda's.