Just so you know, Swifty who “MK430R” mentioned has a fully built H22(fully built head, sleeved block) all done by synapse with a Synapse 3076R turbo kit and that thing was not the most reliable thing. And he did all of what you said you do to “keep it reliable”. Another member on here, “crazyz250”, has a stock H22 with a Synapse 3076R turbo kit and that thing made like ~320whp and that’s as far as they could push it and have it be reliable, and it still recently had some problems with blowing a head gasket or something similar.
H series motors are the worst platform for boost. I’m pretty sure a turbo stock D series could make similar power as a turbo stock H series, and then turbo B and K series are just another league.
and SSmokinSS would suck your doors off their hinges.