However, the bank indicated they cannot finance the 6-unit property and I would need a commercial loan for it.

Another option is to take out a bridge loan for the rehab, then refi and take out a smaller amount of the $750,000.

From my experience, due diligence is part of the difference between the two and the interest structure (Dutch Loans vs.

how to know if it is a good thing paying cash  instead of contracting a loan?

What type of loans or lenders should I target to get this deal locked in?

Buying under an LLC shifts the type of loans you would be eligible for, and likely rules you out of considering a house hack or using an FHA/VA loan, but opens up different funding options if you have the capital for a larger down payment.

Seeing how little of principal is paid off in the beginning of the loan cycle, my urge so far has been to throw what I have as extra payments chipping away at that mountain, but I’ve been also thinking lately if that’s a wise practice.

@Jess AzongSo, if Title is held by the LLC and the loan is being issue to the LLC (good job in keeping it clean), the refi should issue the cash to the LLC. 

It's ideal that you own the property outright because the holding costs on a hard money loan a lot of time is what kills development deals. 

Last year I sold a property and used the funds to purchase a set of 3 land loans in the name of the partnership, which have been paying mostly interest and a little principal on a monthly basis.