I already have an LLC and separate business banking accounts, credit and debit cards.

@Mouhamad Rahal in todays market there are so many apps that give you cash directly into your account like cash app, venmo, with these company's the customer cant get the cash back i.e. like if it was a credit or debit card transaction they could dispute the charge and potentially get their cash back.

Look into prepaid legal in case something happens.

I believe this varies by city/state, but in California, designating a prepaid "last month rent" means that it can only be used for that purpose (even if the rent goes up during tenancy) while the security deposit may be used for repairs, damage and for any unpaid rents.

The person whose debit card it was said that they didnt authorize it and now I am out the money. 

I only had a debit card for years and no credit.

I purposely chose manual payments over automatic bank debit because of that.  

You already pre-paid your cap-ex with the $55,000 in repairs.

I think in your scenario, the lack of credit might be an issue, but it is amazing how many problems can be dealt with if you can keep away from FHA loans (MY opinion, I hate the prepaid interest, the extra scrutiny, and the whole process in general), that said, some times it is what you have to work with, so you go for it.

Yes, if you prepaid $10,000 with your extension.