Huh, I like that. When I start a new game for 1. 10 I may steal that plan. Though having no survey ships to captain will make my officer corps sad for the first few decades.
You lose out on the science department benefit, but slightly faster survey point generation doesn't seem very important. And the loss in fuel efficiency from smaller engines is probably well made up by the smaller hulls. . .
Plus it's easy to swap out one of the surveyors for a small sensor platform if you want a better chance of not blindly ramming your surveyors into a death trap.
I might separate carrier and jumpship functions, but considering how small your jump carrier worked out to maybe not. . .