I don't allow cats though because of their remaining effect. 

Echoing Greg again, you will certainly want to engage an attorney to make sure that you aren't crossing any lines with the residential component of the lease.

I'm not sure how this will effect the credit and/or background check?

Any suggestions on the most effective way to find a lender or investor who will trust someone with my experience level? 

We engaged with a PM company 3 months ago to rent out our SFH, but have found them exceptionally unresponsive to communication and lacking any updates on what they are doing to market the property.. very frustrated with delayed and super vague answers on even if we are getting any showings...

The most effective strategy of wholesaling these days is boiler room sales tactics on newbie investors who saw a 30 minute HGTV program and have decided to become a house flipper. 

Even though it is possible to achieve ratios in the 30's, if you plan to be an out of state owner who's not actively engaged in the park, you should definitely use a ratio in the 40's for your underwriting purposes. 

Real Estate Syndication is an effective way for investors to pool their financial and intellectual resources to invest in properties and projects much bigger than they could afford or manage on their own.

That was part of our decision to go with Tiny Homes on Trailers rather than building anything permanent since the Tiny Homes effectively are treated like an RV.   

Contract states something to the effect: Buyer's access to the property for Due Diligence.