@Nick Hakim - I think you many need to clarify the size of the "one space to lease up". What percentage of the property is vacant (sq footage wise)? It seems that it could be quite significant to raise the 6.5% cap all the way to a pro forma 10.5% cap. Also, would I be correct in presuming the other portion of the "mix" are residential units?
The basics you mentioned about the property seem good. However, the vacancy factor may prevent you from obtaining conventional financing. Moreover, depending on the residential to commercial ratios the mixed-Use property may not be to the liking of many conventional lenders.
Based on the info you provided, I would tend to believe you will likely need a private money bridge loan until the vacant portion can be filled with a quality tenant. BTW, try to get a longer term lease. Conventional underwriters don't like short term leases on commercial tenants.
If you do try a conventional lender, your best bet will be one whom you have a significant depository relationship. Your bank will also likely want you to maintain your operating accounts with them for the life of the loan. Money in the bank and operating monies could be ways for a conventional lender to get comfortable with their elevated perception of risk brought on by a non-stabilized property.