There are two types of TSP loans: General purpose and residential loan. 

exactly  loans on primary are highly regulated not going to find a lender here that is going to violate dodd frank making a owner occ loan as a PML.. 

Reason being HML's are typically short term loans that are interest only.

We’re still waiting for next steps on that one re: borrower repayment or foreclosure.  

Yes but depending on the loan type they may want to understand what that payment is.

I suppose they would be able to help me figure it out but I’m still trying to determine what is the best way to fund something like this and would it be better to sell off the entire purchase once split into separate parcels or is there a way to structure a deal as to where I could sell off some of the land to repay the loan/investors and also retain a portion of it to develop with my own short term rentals.

Are there any resources you'd suggest looking into to understand loan assumption, especially VA loan assumption?

I came across one of these loan agreements online somewhere a few months ago, can't recall where I found it but it was clear in reading the loan agreement there was no language referencing the loan actually encumbering real property, it was just an unsecured loan.  

The most successful loans are those that do not procrastinate and get the appraisers In ASAP so you can get over any unexpected bump in the underwriting process.

I have probably gotten between a hundred and two hundred loans within the past 8 years and I have learned some things along the way that make getting loans easier and harder.