Interesting points.

I find the following points in particular persuasive;

Pt 3) That the UK Parliament has already agreed to "work cooperatively" in the case of cecession by Scotland.
Pt 4) The Irish case as a precedent. Most of Ireland left the union by agreement in 1922. The treaty must have covered the currency issue because the pound sterling was used in S. Ireland alone up to the 1928 and up to the 1970's alongside the Irish pound.
Pt. re deposits. Nobody likes to give back deposits. Ever try to get back a deposit from a Thai landlord? Probably the same in Westminister.

Good luck with the vote but I think it will be a 60/40 in the wrong direction for you.