Welcome to the Jayco forums.
Good questions, but may be a little challenging to answer! We all have our little set-up habits, and very with type of trailer. Some things I do without thinking, but here's my CG routine for my Eagle (as I recall):
* Level site preferred, easier to unhitch/hitch, and use less leveling blocks.
* What is large rear living room window facing?
* How close to adjoining sites and their fire rings, any overhead obstructions.
* Location of shore power hookups, and no obstructions for opening awning/slide(s).
* Remove side mounted sway control bar before backing up if you have one, I don't.
* Move TT in location, check side-to-side for levelness, address accordingly.
* Block (or chock) tires.
Plug-in shore power. Disconnect safety chains, e-brake cable, & 7-pin connector. Place wood blocks under tongue jack stand.
* Raise TV/TT with tongue jack (power I hope) & remove spring bars. Lower TV/TT, unlock TT coupler, raise TT Tongue coupler from hitch ball, move TV away from TT.
* Level TT front to back, place wood blocks under four stab jacks, lower/snug rears first, than fronts. Check that tire blocks (or chocks) are still snug.
* Open awning, especially if setting up in rain, and place a lounge chair under awning. Go into TT, open frig, pull out a cold one, head out to lounge chair and chill for a few moments
....it was a long drive.
* Double check for obstructions, then open slide(s). Re-check 4-stab jacks for snugness. If your sewer drain hook-up is under the slide, you may want to hook-up before opening the slide.
* Turn on A/C or heat. Hook-up outside water and sewer connections.
* Finish securing awning (hurricane straps, etc.).
* Head back to the frig.
That covers the main elements for me, everything else is all inside/outside comfort things.
Now, what did I forget???