So this idea popped into my head and I just wanted to make sure it was legal.

Could you use Seventh Fleet Gunner on a Jedi Starfighter that has Calibrated Laser Targeting in order to get a total of 5 hits at range 1 (or using two Seventh Fleet Gunners). I am asking because Calibrated Laser Targeting does not get you to roll an attack dice but adds a result. I just want to make sure I am reading and understanding this correctly.

Yup.