The sale proceeds allowed us to acquire two duplex properties.

My main concern is maintaining a good relationship with the relocation company for potential future stays, as they were very understanding and realized it was due to asthma issues (I have not worked with the company before).I would appreciate any thoughts on how you would proceed in this situation.

Unfortunately due to the property values, the cash proceeds will be disproportionately impacted by transactional costs associated with the financing (doc prep, appraisal, recording etc.) which will also hurt the available proceeds compared to the same LTV financing of higher value real estate that can better absorb these transactional costs. 

When a tenant leaves, you document that they are gone, who remains, everyone's rights and responsibilities, how the lease will proceed, etc.

Used the proceeds to complete the work on a fixer upper I negotiated for $45k.

Since the seller is behind $20K+, you’d need to clear that debt first before proceeding with the assumption.2.

For property A at $900K with 4100/mo rent, would it make more financial sense to sell the property, take the proceeds and start a new investment in either stock or real estate?

Either way, the property will cash flow like crazy once my unit is rented.I have enough capital to get into a bigger property with low money down and am seriously considering a triplex or fourplex for the next one.Here’s the issue: My lender (local bank) says I need to be fully moved out and have a lease in place before they’ll proceed with my loan.

The result is typically less loan proceeds, lower rate, worse terms, etc.

In which order should we proceed?