Until....head gasket failure. Between 3 and 4. At least Maggie had the good grace to break down outside my house

I got a new head gasket, and was just about to just slap it back on when I realised I had a burnt valve, and another on the way.
I've bought 2 new valves (cheapskate) but need to recondition the seats on those 2 as they're a bit burnt. Unfortnunately my valve seat cutters are in Newcastle....and I'm not.....
Any ideas? Should I just bite the bullet and take it to a machine shop??
What about looking for a second hand mini head (998) would that be an improvement?
Andrew