I would prefer to manage everything through the LLC's account for bookkeeping and tax purposes.Proposed Solution:Open a new joint personal account specifically for making mortgage payments.Transfer the monthly mortgage payment amount from the LLC's business checking account to the joint personal account.Document these transfers as "Owner's Draw" or "Owner's Distribution" in our accounting records.Use the joint personal account to make the mortgage payments.Questions:For the CPAs and accountants out there:What are the tax implications of this approach?

I am considering posing this as a zero interest deal, so the $72,000 ($2,000 x 36 months) paid in the 3 years leading up to the balloon would go straight into the principal, and so will the $17,500 down payment.

Everyone is going to give you their own "personal" preference.

It only says "some personal use" with no quantity specified. 

However, my personal opinion, is that its unethical to mark them up beyond what the consumer would pay normally. 

Paid of solar and the average bill is $7/month.

This is not a paid service, they are doing this completely free of charge, it is simply a part of them trying to get our business. 

I haven’t paid the contractor yet.

I personally use US Bank [Big stable bank with Zelle capabilities], Relay [Checking and Savings 3%] and then Quickbooks [high interest rate 5%].

But I get it if you can invest 500.00 U certainly cant buy whole notes or secured positions with such a small amount. becomes a personal decisions make 7.5% with risk of losing it all or buy T bills for about 5% with zero risk.. its up to the individual investors.