I did think of just adding a megasquirt or mtech or something to look at load and rpm and control some valves, but I think the mechanical solution is simpler and more elegant TBH, but time will tell if I am going to just end up wasting my time or not.
Good thing is that it will literally cost me next to nothing to try (providing I dont overspeed the turbo!), seeing as I'll be buying a charger anyway whatever system I use in the end, and I already have a spare wastegate lieing around.

Physically fitting the charger is proving a pain in the arse at the moment, but thats a different problem altogether of course, lol