Use a home mortage to finance an LLC

[Mike S.]

I am looking to inject (contribute) some money into one of my LLC to finance some new acquisition this year.

I am refinancing my home (that is under my own name) and will use the cash out as contribution into the LLC.

It is my understanding that while you can't deduct new mortgage or refi anymore on your personal home, you can still deduct all its costs when it is used for investment (by deducting from the investment income/gain).

What would be the proper way to document this transaction in addition to the schedule recording the contribution in the LLC book?

Should the LLC take over all the payment of the mortgage directly? Should the LLC pay me for the monthly payment and record the interest as expense and the principal as distribution?

In the same token, how to expense the closing cost, appraisal, points, ...?

Can I also expense the additional insurances required by the lender?

Or should I loan the money to the LLC mirroring the same conditions as my lender? But then I would have to pay income taxes on the interest received without being able to deduct the interest paid?