Thanks for all your input everyone.

Here is what i think i have decided.

Im going to buy a Masi 105 now (http://www.masibikes.com/steel/speciale/) which is the bike i WANT!

Ive worked out with the shop that they will discount me a Brodie Elan which i will pay in instalments and pick up later in the year thus solving my storage issue.

If i need to sell one after the trip then so be it.