Congratulations Doug,
Get hose reel if you haven't got one, 2" pipe to the wand if you can (this takes some getting used to) some hose fasteners for around banister rails when going up stairs, hydraforce like Mike says, your old upholstry tool will probably need upgrading to a higher psi.
As I think of them I'll keep posting.
Oh and find out where the toilets are as you drink more tea when you are standing about idle as some jobs are embaressingly quick.
Shaun