I’ve had several investor clients go with a new (to me)/ unproven lender because of a slightly lower rate promise only to get burned by that lender (closing costs were higher, appraisal costs much higher and appraisal was a nightmare, main point of contact gave us the clear to close as we passed our financing contingency then just before closing someone from the underwriting department we previously didn’t know existed said we need a few more days and seller didn’t agree because they had a higher backup offer, jeopardizing the earnest money and losing the property, etc).

So you're going to have to do some research on the existing towns you're looking at to see where it's allowed and where it's not allowed.

Only a couple exceptions exist to their caveat emptor doctrine. 

I would like to think in a way that investment in general, and the real estate investment, start with a solid economic reason - "Why do you Invest, where you invested".To elaborate on below - Vegas is a great example where no real economic driver exists and when you invest there, you should be aware that is a highly volatile market (side note: i both 2 properties there in 2011 and 2012 and i sold both this year) and you should pay an extra attention and be prepare to reposition capital.It's clear, if you invest in Vegas or Orlando (just 2x entertainment cities) you will expect ups and downs and you need to position yourself with extra reserves and extra caution if you are planning to stay in these market for long term. 

This approach undermines the trust that should exist in a lending relationship.

If you can't find an existing multifamily to pencil out try to identify something that you could add an ADU to or a larger single family home you can split into more than one unit using ADU rules.

(I would not specify how much.)If the property needs a ton of repairs, then even buying it subject to the existing mortgage may not be enough to make this a viable deal.You need more info, and fast!

Keep them under my existing Superhost personal account, or set up a new branded account that could stay with the complex forever. 

I have turned over all of units multiple times the highest vacancy I'll get us under 1 week becuase property will be up for rent 2 months prior from existing tenants moving out.

Not as saturated as other markets.