[Jonny042]

I'd go ahead and assemble it - why not? The assembly lube is not going to go bad in a year. Or two, or three, any more than the grease in your wheel bearings is going to go bad while the car sits unused.

Put another way - what's going to be different if you assemble it a it sits for a week or two or a year or two? Nothing I'd say.

This is of course assuming you use a grease type assembly lube which seems to be the standard these days.