Would a HELOC or home equity loan on my personal home be a good idea to fund this?  

I see little benefit in the FHA as an option as long as the 5% conventional loans are available now.  

You can put a mortgage into a "trust: without triggering a due on sale but again contacting your bank/lender is the best route to avoid any issues.Some banks/lenders or servicing companies change guidelines and even a trust may require other paperwork but the attorney usually facilitates that to be safe.  

If the insurance isn't done properly, it's on the edge of impossible to cash the check because it's made out to the lender, my company, and the seller(s). 

I've been searching myself for 2 years now and have yet to find one good cold calling company, I've even tried to hire off upwork directly.

Get a 50% LTV loan and buy another property just like the one you own. 

I was just thinking today there was all this excitement about VA loan assumptions there for a while when interest rates started going up. 

Are you currently self-managing or do you have a management company?

I signed up with them about 3 to 4 months ago, then found out how expensive the loan was to get going with them and told them that I would self finance it instead but they had to cancel the loan first...they use a company called Special Financing Company..the person I spoke to at REI his name is Paul, he said he would take care of canceling the loan, but a month later I realized that they were pulling $599 out of my bank account.

Your personal loan has a 5 year balloon period.