need advice


I am pretty sure you can afford 2x D7000. They are at rock bottom prices right now. That is after selling your D5000 too.

And in case I was misunderstood, I really wasn't kidding. Just get the more expensive option, which by the way, isn't a lot more. You get so much more from that few dollars.
 

Current 2nd hand price still variable .

D5000 @ 650
D5100 @ 550
D7000 @ 950
D90 @ 680
D300 @ 850
D300s @1100

For me I would go D7k to be settle all.
I believe you can saving a little bit and top up minor.

Cheers!
 

D7000 is a good deal.