Any advice on how to navigate this while keeping the deal intact or potential transfer of partners would be greatly appreciated!

So, things change a bit.If it is his personal home, there are more restrictions.For an investment property, if you take over his financing, read through the deed of trust (mortgage) and see how they handle transfer of ownership.

With online access to almost every jurisdictions property recordings, lenders today use software that automatically searches property transfers for transfers involving their loans.  

@John BuschHi Christopher,A few great local options to consider are Mike Keith with A&E Construction (352-270-0399), Citrus County Handyman (352-440-3305), and Dynamic Craftmasters (352-422-5119). 

If you can access the wall cavity, adding rock wool (mineral wool) insulation will make a big impact by reducing vibrations and sound transfer. 

One key factor to confirm is whether the STR permit is transferable, as regulations can change.

Our old agent retired so we were transferred to novice and have trouble getting anywhere with her (not replying promptly, not able to answer questions).

But the person seemed bent on me wire transferring within 3 days, or the deal will no longer be valid.

Is there anything they can do to keep you from transferring your assets to another custodian or is it already too late?  

If E has any priority over B, for instance, I would not invest in this structure, given that my bank account puts me at a Class B share (side note, their Class B is a little more GP friendly on the surface, than other groups, but devil is in the detail).