I have no experience with boost, but I do with timing control. With a box like this:
https://www.diyautotune.com/news/int...d-microsquirt/
you could control the timing, and the boost, and with an O2 sensor you could enable spark/fuel cuts for safeties if things go wrong. You don't have to control fuel with it, but you could.
ETA: this is a really basic version. But it would be plenty good for full timing control, and safeties, rev limiters, etc. Also it will accept a GM ethanol content sensor, if one was to control fuel with it. Could be handy for the boosted folks