Without also scaling back the weapon factors, most ships would kill each other in the first combat round. The critical hits produced in most cases will be overwhelming.
Looking at hulls smaller than 1K dTons, EP requirements will be the biggest limiting factor to bay numbers and types. The smallest EP requirements in order are missiles, repulsors, and plasma guns. Mid range would be fusion guns and PAs in the order. The meson gun bay needs the most.
EP requirements will also limit gee rating, agility, and computer choice.
Back of the envelope time, at TL F I can build a 300 dTon hull, 6 gees, agility 6, PP 10, armor 15, computer J, with a crew of 6 (no gunners) and 79 dTons "left over" for gunner SRs, bays, power plant expansion for EPs, etc. If you want it jump, we'll probably need to increase the size some.
It would be a nasty little thing, but it's life expectancy would be close to nil.