I used to drive a 1028 at the museum I worked at frequently, great truck. I also own a m1009 and use it as a daily driver, plow truck, expo rig, etc. I don't think all the extra work would be worth it personally. You might feel it worth the work and I don't fault you if you have your reasons. That said my m1009 with a few key mods is able to handle any abuse I have ever put it through, sustained more almost 30 years of military service, etc.
I have upgraded my front springs to the HD version available at SD Truck Springs and they rate them at 1,900 lbs (four leaf). Keep in mind I run a 1/4" plate steel full bumper and brush guard and a 12k warn winch with steel line. I can also throw my plow on the front end and it rides just as nice as without. I plan on new 5 leaves in the rear before the winter to rejuvenate the ass end. I already had the frame supports/reinforcements that came on the truck from the military. If you use the ORD frame support/steering box support you beef that up nicely.
Treat yourself to an axle swap (waiting to do mine) with the dana 60 up front and 14 bolt free float in the rear just like your current truck. I re-geared to 4:10's and have been very satisfied with the balance of power on the low end for off road and cruise speed on the highway. The gear vendors are nice but more than I want to spend on this old girl at the present time.
I would think a few key mods like that would net you a very robust truck and save time and money when compared to a frame swap.
Just so everyone knows I don't have any ties to SD Springs or ORD other than I have purchased (at full price) there stuff for my truck and am very pleased with the results. I get nothing out of this other than helping someone else on the forum.
See links below:
http://www.sdtrucksprings.com/index.php?main_page=product_info&products_id=1463
https://www.sdtrucksprings.com/index.php?main_page=product_reviews&products_id=7337
http://www.offroaddesign.com/catalog/steeringkit.htm