Seems you're doing a lot of things right under current circumstances.
What's the lowest power multiplier available to you though?
I still find 0.5 excessive for most civilian and even some military applications, I typically reserch down to 0.3 before I build any ships in a standard TN start. When short on Sorium and Gallicite specificially, I might drop lower.
I haven't researched down or up any, although I might research up for missile engines. I think I have .3 or .2 minimum power. I did make one ship that used a 100% power engine, because GOTTA GO FAST and space constraints imposed by a preexisting jump drive design I wanted to reuse.
I learned to love building a whole classes (generally I call them corvettes) using commercial engines as they are dirty cheap to make and are useful for filling out your fleets. It sounds like you have a good grasp of the game - so good job!
Everything I've built so far (no warships yet) aside from two scout craft uses one or more of the same 50HS .3 or .2 power multiplier commercial engine. I'd like to have Fuel Efficiency .7, but I don't (yet).
I also just realized that I'm short of Uridium too, which I need even more of. However, I did finally finish an asteroid mining module.