Be careful that you don't cut yourself. Bib Boring can be a dangerous activity. :D
It says on the his website that it comes with a new Cometic top end gasket set, but you might want to ask the man himself over the phone just to be sure. You could also discuss porting options and other things at this time to ensure you get the work done that is just what you want.
This time of year with shipping time included should be around 6 weeks, but call Eric. Talk to him about what you want to do, ... Nice guy! Awesome work!