Setting up a 64 C10, for show, and tow?

[ElkyRacer]

Ok, Im to the point of ordering parts for my 64 Long Fleet. Going with a 03 model 5.3 from a Tahoe, a 200R4(temp, its fresh, and paid for until I can find a 60 or an 80E and the money to build it) for drivetrain. Looks like Ill be finding a complete front running gear, and rear axle out of a late 70s-mid 80s truck(to convert to disk front and for 5 lug wheels), hopefully a 12 bolt rear. This truck will need to tow about a 4-5k rock crawler Jeep I will be starting on after the truck is done, and still lay the frame when at shows/work(work at a truck outfitters store).

Front will have 2 1/2 drop spindles, Slam RE7s, and will be Z'd however much it takes to lay frame with a 29in tire(max I will ever go with). I will be fabbing an adjustable bump stop, so for daily driving duties, or long trips, if I loose a bag, it wont make the truck un-operable. The problem Im running into planning for is the rear.

I know Im going to have to have a serious notch for that, and I plan on raising the bed floor to clear this. The notch will be over-built from a strength standpoint as I will be pulling the Jeep around, and I plan on the same kind of adjustable bumpstop as the front for safety. Now what I cant figure out is the suspension or bag setup.

Are the stock trailing arms strong enough to handle this load? I was thinking if I moved the bags off of the trailing arms and use a sleeve type bag on top or on a bracket off of the rear end, would that give me enough lift and be strong enough for what I need? I want enough lift to match the front end for around town and getting to the campsites where we will wheel. I do understand this setup wont get me back up to stock ride height but I dont want it in the weeds all the time. Most of the guys getting a good amount of lift I see are running the RE7s moved up on the links/trailing arms getting more lift ratio. I dont REALLY want to go this way as this in my application would stress the links/trailing arms when pulling. I know I could step up the link tubing and other materials and put the bags on the links, but that would still put stress on the bags right? And I dont even want to try that on stock trailing arms!

So what would you guys suggest. I want to order all my stuff after the new years so I can get to work on it but I want to buy once and have everything right the first time.

Any help would be appreciated!
Kyle