You shouldn’t have any issues with bumps, unless you get keloids. But the shots would end up being just as lumpy. I change my infusion set every 3-4 days, so that would be a good 10-13 shots, instead of just one poke for the infusion set. Lower ratio.
You can put it in other areas too, something you’d need to experiment with after you get a pump.
I’ve been on a Minimed nearly 10 years now, and I’d never trade it in. I have no issues with bumps or lumps, so I’d recommend it for you. If you get a pump, give it a good 6-9 months to adjust to it. It takes a bit more attention than shots, but once you get the hang of it, its like its always been there.
Good luck making a decision!