^redacted might be able to help with Capital Gaps & Bridge Capital.

Sounds very much like sub-debt, I have some experience here so happy to chat. The one thing to think about with ST financing that's subordinated is that the senior can stop the payment going out and will typically want to see other capital going in to replace it rather than it being paid out shortly after closing. Bridge financing works well if there is a timing gap that creates the need, but not so well if there is a structural gap (e.g., if the bank, equity and seller are all tapped out then that's structural, if you are looking to bridge until an asset is sold and excess funds will be allocated to the balance sheet then that's temporary). Another way of thinking about this is the senior will only let junior capital go out if their risk profile is unchanged.