Axiom Home Page Forums General Discussion Advice from Axiom Owners From 2.0 up to 7.1 step by step advice please

Okay now i have my ht receiver with 2 spkr (2.0)
i don't have the budget to buy all spkr in a one shot deal (to go at 5.1 or 7.1).
.. so if i go step by step, what is the logical order of upgrade to get the maximun improvements at each steps ???

.. personnaly i think.....

a)get a sub (2.1) i dream about ep500
b)get rear spkr or center ???? i don't know
c)get center or rear.
d)get extra surround for 7.1
e)finally change my actual front spkr (JBL LX55) for M60 ?

I might be wrong but what do you think ???
Some of yours make step by step ?
what are de DO an DON'T ???

For now, i'm more audiophile than movie watcher.