what would you do? Whats the best path to go down???

I know a single 45mm weber works. With one side blocked off.

none of them go efi it's too easy these days, have you thought about the fuel system and how the pressure will have to rise inline with boost, then something to retard the timing under boost, those things add up and can easily end up more than a cheap efi setup,
 
i dunno about blocking one side of the sidedraft carby it wouldn't work on those off the shelf manifolds

If you really want to go carby blow through I would use a Holley, cheaper and easier to modify.  Plus once you realise how much better efi is you would have wasted minimal money and little time.  Most carby setups are not daily drivers or street driven often.
 
I would not go draw through because that instantly rules out an intercooler, plus the turbo requires different oil seals.
 
You should be able to do some form of ign retard with the std vac can on your dissy because they're dual ported on both sides.

why not just get it running with the std 32/36 and a distributor then look at running the ignition from an ecu, then change over the fuel, then add the turbo in 3 stages , it's probably a bit much for a first engine to be turbo'd
 

+1 straight gas.
Eliminate a couple of intake temp and compression issues straight up.