Thanks folks, really appreciate the help.
My bed is 15x13 inches
I worked out with Aspire that a 6x7 inch pocket, .75 inches deep will take almost 10 hours with a 1/8 spindle... That's quite long!

There's a spindle on eBay that has a 1/2 inch collet (12mm) for about $70 delivered. Not sure what the quality would be like?

It says engraver but I think it's ok for milling...

http://item.mobileweb.ebay.co.uk/vie...id=30124643751


Any other suggestions of larger sized spindles?