backlog of customers

With around 300 plus forward orders already and installation rates of approx 15/month this year,20/month 2005 and 25/monthin 2006 how will new customers/contracts feel about waiting for lengthy periods of time.I noticed some time back reading one of rdf contract wins with the client mentioning immediate installation.I am sure a lot of juggling will have to be done to keep everybody happy. How will they cope if the rate of forward orders accelerates,tender for contracts and tell them to wait for a couple of years? If it all pans out it is an excellent problem to have but it is still a problem that has to be handled.
Rowland