Several options you can explore to get the down payment capital: Solo401k; HELOC on personal residence or from equity of the SFR; Cash Value Life Insurance Policy; Business Credit; Private Lenders, to name a few.

I would say get connected with a local agent and also set up with a lender that has you pre approved to make it super easy making offers.

They remain whatever the original borrower has.When you use typical financing from a lender, you have the lender's hoops to jump through and loan origination fees, the appraisal has to come in at a certain number, oftentimes an inspection or appraisal will kill a deal. 

If you need help with contractors, lenders, investor friendly realtors or anything else, I'd be happy to help connect you.

You might also meet title agents who have resources on, say, foreclosures or probates…and might recommend lenders who actually lend on more difficult projects (as the title companies also know which lenders can close and which are difficult).I also go visit open houses to see what sorts of finish to put on my renovations or to look for the next house or area in which to purchase.  

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Talk to lenders, potential LP's and partners to see if there is even a pathway for you to get a 100+ unit deal done, and if so would would the parameters of the deal need to be. 

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

If in the future they try to buy a house, the lender may require it to be paid but that's a long shot. 

Paying it down faster doesn't change your payment.I recommend you speak with your lender so they can explain this to you.