The old 7D v 5D Mkii

Need to do something today for tax purposes!
Have followed the similar threads, but not exactly my situation.

I mainly take Macro plus a little motorsport and a little landscape plus very little portrait.

I am looking at selling prints and am not sure just how big I can go with the 7d, with 'L' Glass and all other things being equal.
Would appreciate any serious response.
I am in Oz.

Also if you have purchased a good deal in Oz from Oz stock, i would be pleased to hear from you.
7D or 5D Mkii?
John.
P.S. Will post on the 5D Forum as well.