Transmission, torque converter, updated starter questions

From the pic in post 6, the TC is in deep enough; the lugs are below, the face of the bellhouse.
The flexplate and TC have one hole offset. you will want to find and mark these now, to save you the hassle to find them later. After indexing, I rotate the crank to put the marked lug pointing straight down. After the trans is installed, you then just pull the TC forward, rotate the marked lug down, and install the first bolt finger tite. Then rotate and continue. Then torque them up.