If you did all of that there would be no point in haveing a ea82 or ea81 just throw in a ej22 or ej25 or franken motor and call it good. The injectors can cost more than a ej22 plus all the mods wouldn't be worth it cost wise compared to what a newer motor would offer. Considering it already has most of the stuff you want plus you can just use a lap top as the ecm to control everything.
You need to reread the OP this was a (money is no object) theory on the possible applications of power on the EA82 motor. We all know (and god is it flamed enough on here) that a more modern motor has more capability of power. that is not what this thread is about. it's about what could you do (money aside) to an ea82 to make it perform.
And a set of normal bosch automotive injectors can be had at any salvage yard and cleaned cheap... how is that more expensive than a full motor? I'm talking about motor cycle throttle bodies not TBI units. and actually a small GM ones would be easier than the bike ones and can again be had at a salvage yard, as can the coil pack. I could probably pick up the parts from any yard for under $40 and have the twin intakes made for around 200 from any decent metal fab shop. the only hard part is synchronizing the throttles and their are parts out there that do just that for running dual carbs for harleys.