Welcome to the forum, Julesap. Good for you, already got your trailer frame and are ready to start your build. When I began my trailer construction, I was told that 2/3 of your trailer should be in front of the wheels and 1/3 should be behind the wheels. It worked for me and my tongue weight is just fine. In my humble opinion, I feel most teardrops are made way too heavy, using too thick material for the floor and walls. It is a matter of choice, and insulation and interior paneling may be a consideration where you live.
Here in So Calif, 1/4 inch sides worked well for me, but I have yet to see another built that way. Perhaps you could post a sketch of your plans, so we can provide some feed back, as you suggested. Wow, a gal going for a TD build, great, I love it. Good luck on your build, take pics and post em and remember, we are here to help.

Roly