Overall advice on setup? Gracias!

Your tomatoes look great so I think you're on the right track. Nice, healthy green color and I didn't spot a sad looking leaf anywhere. The only thing I'll comment on is the watering system. The roots will only grow where there is moisture. Drip emitters only wet a cone shaped area below the emitter. The other side of the pot probably isn't getting anything. If you aren't wetting ALL the soil then you aren't using ALL the soil. It looks like you have good lighting above so don't hurt your yield down below.

Well they look great, I would recommend not placing your hygrometer in your pot, because you will not get an accurate humidity reading, i'd say hang it somewhere in the tent, not directly under the light. I see no signs of light stress, or nutrient deficiency, and as far as trimming goes.....being your first grow, you can always just let em grow and learn from them. Overall keep doing what your doing, they look beautiful. Happy growing.