Also, try to see if the lender will allow to buy under LLC for better assset protection; by doing personal gurantee. 

The borrower is not personally liable for the loan, and the lender cannot seek additional repayment beyond the collateral.Since the borrower is not personally liable, they can choose to make larger or additional payments to pay down the loan faster if they wish.

Quote from @Jacob Sherman: want to be at 65% ARV to stay solid I’m having difficulty finding the ARV in Ohio, areas like Cleveland, Dayton have prices all over the place.

Personally, I've been in the mobile home investing business since 2007.

The easiest way to do that is to be honest with yourself about your goals, risk tolerance, personal bandwidth and capital. 

If you trust him, and have a solid foundation from the beginning ( which you should, otherwise don't use him ) ask him what his compensation is, and compare it to others to see where he stands.

And while grabbing an owner-occupied loan is typically a non-starter in a standard 1031 transaction, this is a mixed use property that does include a personal residence portion. 

Are they different for rental property vs personal?

And with you using one of the units as an office would not eliminate the fact that you are 'disqualified person'.

Does having an LLC simplify any of that vs doing it as part of my personal return?