But first, I'd like to know where you're starting from.

They also like to acquire MHP with higher vacancy/ vacant pads (not sure what the industry standard is).

I have 2 other monthly loan payments I would like to pay off or lump in with my refinance as I believe with the forced appreciation and normal appreciation I will be able to pay off most my HELOC (5.99%) and all of my Credit Card that is currently at a 0% APR until end of May.

But, that aside, I’d like to initiate a discussion of where note investors feel the opportunities will lie moving forward.I’ll go first.  

It sounds like you’ve got a solid plan in place with the bank refinance to secure long-term financing.

They didn't pay for it, so they don't take care of it like an owner.Before you make assumptions about costs based on a seller's contribution to improvements, find out what they improved? 

If the house hack is renting rooms within your house; tax wise likely worse because you can only depreciate the fully rental areas (bedrooms and maybe bathrooms).

i tell them all the time to find a good W2 job you like and you plan on staying with a long time. 

More like a 101 of taxation: you had a reserve of losses -> it helps when you have profits.And a tax geek addendum:I also do not see a direct link to cost segregation benefits here.

Sounds like a great plan.