One of the units was currently rented for $3300, with an accompanying lease and last month's rent deposit collected at close.

Think of all the things that could go wrong and see if the lease addresses them: unauthorized pets or tenants, early termination, security deposit, lease violations, late rent, eviction, lawn maintenance, parking, etc.5.

Another thing you could do to protect yourself some is request an larger security deposit.

If so, do I charge the $38 (RentPrep smart move) PER applicant, that then goes toward their security deposit?

You can also use bank statements where the lender uses your gross deposits as income. 

I don't have advice but I personally might replace the floor and take a certain amount of money as a refundable pet deposit that you will give back on move out if the floor is in good shape.

There are several of us who've been contributing on here for ages- but you can feel out who you think you'd work well with, who matches your needs best ect. 

The repose gray suggested looks like it would be a good match (looking at colours on a computer).

All in all £180 a month.My question is, would it be best for me to clear my debts/finance loans or keep these in place and use the savings for a house deposit?

One of the tenants had a security deposit that was not on the lease or on the e-stoppel, and the other two tenants claim they pay $500 less in rent (each) than the leases / e-stoppels show.