When I bought my speakers, I was low on cash so I slowly purchased them. I bought my VP150 in June 2002, Got M22's for my birthday in August 2002 and then got Qs4's in September 2002. I later bought a new 6.1 receiver and then traded my 2 QS4's for 3 Qs8's.
It is not that difficult to wait until you have a little more money to buy the right system. If you need some more time to purchase what you want, take more time. Buy M60's if you have the space for them and then later get QS8's, then even later get the VP150. That way, you will not have buyers remorse. You do not necessarily need to buy everything at one time.
Doing this does cause you to lose the 5% off, however, so make sure to take that into account when making your decision
