Thanks all for the advice.
It has made us think about a lot. Certainly I have changed my opinion from this thread and reading around.
As with most people on the forum the key driver is to make a bit of money in a relatively short period of time but another big driver is that we are all really interested in the idea of crypto currencies and the nature of how it is supported.
Anyhow we reckon we will do mining with GPU on altcoins, covert some back to $$ to cover costs and hold some in bitcoin.
So off to do more reading on how best to set this up!
Thanks again