Yeah, get whatever now, its easy to change later, and you can sell injectors all the time. I sold my 54# injectors for what I paid when I went to 83# injectors. Then I sold those for 30 bucks less then I paid for them. 10 minute job or so to switch them out. Get what is cheaper I guess.
Tuning shouldn’t be a big problem. I tuned my 83# injectors using megasquirt, and I had no prior tuning knowledge (hands on). My idle was 15:1 and my dyno showed as flat as could be, 12.1:1 afr across, after 4k rpm.
–mark