Need lab advice!!!!!!

magic19

Ok so far I have a 4000(NP-2e module), 3 - 2503s, and a 5200A/S. I was thinking about getting a 3620, a 3640, and a 262x, with 2- 2950s and a 35xx switches. How good of a setup can I get with this epuipment and can it take me through my CCNP? or is there something cheaper that will give me the same effect I need. I hear the 2500 series do everything the other routers do, their just dedicated to their jobs instead of removable modules.