Just because you have extra injectors don't mean you have to run high boost. I just find its a lot better to have extra injectors.
Myself I very much prefer the cutler way of doing it, running 2 injectors, but more fuel from the pump. OVS will also set you up this way if you want.
If I can hit 15 psi on 2 injectors... no need to run 4 imo. I feel that around 13-14 or so you get to a point where it's more power than you can use! (blasphemy, I know!!!)
I only know one person with a 4 injector sled that runs "smooth" like ours... and he's a tech.
BLK88... just because you've got a "race gas" kit doesn't mean you need to run race gas. That's a big misunderstanding about turbos.
You can get a kit that CAN run big boost, but you can also run that same kit at 7 psi no problem.
Most of us "race gas" guys aren't running race gas straight, we run a mix. If you wanted to run, for example, 12 psi, you could bring 15 gal of 114 out west for your vacation, and you've got more than enough. If you run out... run pump gas & turn it down a bit, which takes all of about 15 seconds. no big deal.
What the RG kit will allow you to do though is run higher boost for the fuel you have as you have the fuel to wash away det when you're on the edge, so it's also "safer" at that given boost level.
IMO, don't get a PG kit, waste of money. The sleds wake up HUGELY at 9-11 psi, even 10 makes 7 or 8 look stupid.
If I were you I'd make a point of taking your next trip & seeing if there's some folks on here who could meet up with you & show you some different examples of what the levels feel like.
I know if you came to CO for a weekend I could get you on at least 4 different setups... which would give you a feel for what works FOR YOU.
Btw... install might not seem complex, but EVERY person I know with issues installed it themselves. Install is HUGE. I can't take credit for how well my sled runs, that goes to cutler... he made it so I don't have to deal with anything, I can't say that for the self installed sleds I know of.