One of the major issues I see is this.

;however, my issue is that I dont have good credit and since im self employed I make.very little income. 

Lot of the issue stems from pillars / blocks that sit on top of the soil in the crawl.

I think communication seems to be the issue here especially with your comment on how the PM is unresponsive.

The above are justthoughts, issues and approaches.

Even in towns where they desperately need affordable house if, they can’t get over the stigma of MHPs.The other issue you’ll run into is highest and best use.

I spend extra for the the supply house versions and rarely have issues during warranty period.

Another one was seller-financed for a few years before refinancing into a conventional loan around 2018, again no issues until this year.

Of course when doing the 1031 exchange your basis will carry forward into your replacement property.Where you have a potential issue is establishing your intent to hold those properties but immediately selling one or more them as soon as you have them ready. 

There's a good chance the issue(s) you face has already been discussed and answered.Ask questions in the appropriate forum.