and also, what is the pre-payment penalty on the DSCR loan? 

I'd likely just agree to break the lease with a couple months of rent as a penalty rather than force these people to continue being tenants in my property....you never know what will happen to the condition of the property.

I know the 401 penalties are steep but my thoughts are if I can gain enough cash flow to leave my current career, do I really need to worry about whatever money is in there to draw from 20 years down the road?

But I am sure they talked about fines and penalties. 

Note Florida offers a 5% penalty rate when bought in the original auction, but removes the 5% penalty rate if bought OTC. 

Yes, you can use part of your Traditional IRA funds for a down payment on a home through the First-Time Homebuyer Exception, which allows you to withdraw up to $10,000 without incurring the 10% early withdrawal penalty.

Know that every long term lender will require a survey and if something comes up on it when you are trying to sell or refi, you could get stuck in hard money without an easy or quick way to get out.Is there a pre-payment penalty?

If so, I'd look into that before a DSCR loan to avoid the prepayment penalty DSCRs carry.

If that's not the case here, can you terminate the agreement without penalty at this stage?

Secondly all DSCR should allow you to close in the LLC without a rate hit.If you are going to take out any cash through a refinance in less than 1-2 years be careful of how many years they try and hit you with the Pre-Payment penalty.