Hi HMZ, welcome aboard from another So Calif TD designer and home-builder. Looks like you are jumping in with both feet and have purchased stuff to make it happen. If you have not seen a bunch of teardrops or talked to other TD folks, I just want you to know there will be a gathering up in our local Mountains in a couple of weeks. It is probably only an hour and a half from Fullerton. The nearest city is Idlewilde, about a half an hour east of Hemet. If you can break free, come on up and chat with a whole bunch of friendly TD and Vintage folks, walk-ins are always welcome. I know there is plenty of food that we can share on Sat evening at the pot luck, so here's hoping you can attend. Also if you ever want to talk and see teardrops, swing on my my place in Wildomar, off I-15, about an hour from Fullerton. (Oh by the way, I built your post office there about 45 years ago)
PM me if you are interested. Good luck on your build, and remember, we are here to help, all you gotta do is ask.

Roly, the So Cal Woody guy