It would have been a great idea before i purchased my house. 

You can easily locate a decent lot and include that into the primary manufactured home purchase. 

Purchase price: $550,000 Cash invested: $120,000 Sale price: $710,000 I bought in December of 2022.

Purchase price: $550,000 Cash invested: $120,000 Sale price: $710,000 I bought this property in December of 2022.

When I go to the State of Alabama website, under Tax Delinquent Properties, there are "leftover" Tax Deeds in certain counties that were never purchased, which the state is still trying to sell.

I can find properties in my market that perform similar on a larger scale (more costly but similar percentages) but they bleed cash after the refi which is why I have not purchased in 2.5 years.  

This will require purchasing multiple properties.

Sounds like you need financing for both the purchase and for the rehab.

One option could be to purchase a distressed property with a bridge loan, complete the rehab, and then refinance either through a rate and term refinance or a cash-out refinance into a DSCR loan.

I have purchased and renovated a couple of SFHs and am having some difficulties finding good tenants.