I'm currently working on a design and upgrade from proboards to cubecart for a friend.

Problem is that prostores uses ebay as a host and we need to switch hosts. I've got a cubecart install up for the design I'm doing (on the backend of one of my domains and hosts), and I'm wondering if its easiest if I build up all the products in there, then if its possible, transfer to his site quickly.

The problem is I'd have to change hosts, and he doesn't want his site down for very long so what would be the best bet?


Basically:
Currently using ProStores and eBay as host
I've got a test install that I can build his whole site in
Can I transfer all data (products, prices, etc...) to his site and a new cubecart install

Thanks in advance for any help.