As many investors know, lenders typically require more down payment 15-25% and to utilize Debt Service Coverage Ratio or DSCR loans would not allow vacation rental projections or income to be utilized for qualifying purposes.

Their plan last payment is scheduled for Nov 2024.

That would go based on the income of the property and your down payment/cash reserves rather than your current income.

Monthly extra payments?

If you wanted to invest through an LLC it would require you to purchase it as an investment property from 15%-25% down payment.

One of the reason is that I would be able to put less down on the home as a down payment.

A down payment of at least 10% is advisable unless you have strong cash flow from stable income sources.

A more important question is how much is your PITI payment versus your $1100 a month rent payment (assuming you're going to rent the property) since you want cash flow.  

Once the home is under the LLC Ownership, am I able to deduct expenses/mortgage interest payments from my own personal W2? 

Either way you will need 25% of the down payment.