What are you going to be doing with it Rob?
Visual, or the "dark side" (astrophotography).
Newt on an EQ mount can be a handful for visual work - eyepiece can get into some exciting positions
If you're doing pretty pics, I'd suggest an 8" is better - less weight, wider field, easier to set up, less counterweights, less stress on mount, smaller focal length (tracking a bit easier). Guys here have made 10" Newts work, but you have to accept the extra challenge. Get enough backfocus will be an adventure on its own too.