I have little education on credit / credit use but I've been doing countless research since I began mortgage shopping.

Alternately, you could encapsulate it so any asbestos fibers cannot escape. 

But I've had 3 cable bury work orders, 4 tech appointments and countless phone calls with Comcast with about zero progress (they even managed to somehow mistakenly open a cable bury work order for a Houston address I lived at 6 years ago rather than the for the cabin!! 

Alternatively, you can ask the seller to give notice prior to closing to the MtM tenant or, depending on the timing, the one with the lease.

If you want to mimic an appraiser's approach (wise move since their are the ones determining value) you can search up to 1 mile away and up to 6 months before to be easily useful in comparing to your subject property.If you can't find a comparable sale to your subject property then the next best alternative is to take similar properties and adjust them to match the subject property (for example, if your comparables are all 3 bed 2 bath homes and your subject property is a 4 bed 2 bath, you might ADD something like $4,500-8,000 to the sale price of the comparable properties to indicate the likely value of your property.

I am pretty confident on the tools I've learned to use thanks to Brandon Turner's books, I'm confident on my strategy thanks to David Greene's book, and I'm confident on my mindset thanks to a countless amount of books I've explored throughout the years, as well as my own experience owning my own small business, and learning from other peer investors through networking. 

The alternative is - you wholesale your current deal to another investor and make enough for a 15% down + fees & costs.

Alternatively, you may want to see if your title company's underwriter is being too overly cautious.

Would it be better to try & do an owner finance deal or other alternative?

I feel like so many people are just stratified on either end of full on leverage or pay all for cash, and I wonder if this is an alternative people should consider?