i would get a tial bov. seems to be the bov of choice for all dsmers running serious boost with quality setups.
hks ssq sounds like chewbacca under lower boost (under 10psi) imho
greddy type s is a piece of shit and will break (as rubicant)
jdm evo mr bov should work nicely as well… hell, you could even use a 1g dsm valve and it will hold 20psi no problem.