As I'm sitting here, chomping at the bit to get my next paycheck so I can retake the CCNA exam, I'm looking ahead to future certs. (It's in the bag, I just need the cashola to sit the exam.) I'm going to do the CCDA after CCNA, since my employer requires it, and I'll be doing some Microsoft-moonlighting in the form of chugging away at my remaining MCSE exams. However, the real fun begins in a few months, when I start studying for the CCNP. I've got a rack at home, shamefully empty, and I'm going to need to begin filling it with equipment if I'm ever going to pass those exams. The fact that I've already been sneaking in study-sessions with the CCNP CBT Nuggets is neither here nor there.

This is a makeshift shopping list of things I'd like to have in the lab, that I'm going to be amassing over the coming months. This is a "best-case scenario" lab outline, of course, and I'm sure I'll end up with other equipment as I go along. Still, I'd like to have at least the following:
Routers
Two or three 3640 routers, depending on how much I want to spend. I've seen them on eBay for anywhere from $75 - $250 in working order, so it shouldn't be too hard to snag a couple as my "regular" access routers to break. . . err. . . "set up labs with".
A 1841 router, since they're nice and cheap, and I'm going to need at least one ISR.
And I can probably pick up a 2500-series router to use as an access server, this'll either be dirt-cheap, or I can probably find a friend or a co-worker that's got one laying around. In fact, I think my former networking teacher has a 2511 in his office, gathering dust.
I'm sure I'll come across other routers, probably in the 2500 and 2600 series, that'll end up in the rack. Hopefully, a couple of those will round out my lab.
Switches
A pair of 2950's, which are going to be relatively cheap to purchase if I keep my nose to the grindstone with the ol' eBay.
A 3550, mainly for layer 3 switching. I want to have at least three switches, so this would be my third. I've seen these for relatively cheap, and I think my company has some partners that might do some bargain-sales to get rid of a lot of the equipment on my list. If I really scrounge, I could probably get this particular lab up and running for about $1,000 (not including add-ons and extra memory, that sort of thing).
Other modules and add-ons I can pick up in time, as I need them. Again, working at a datacenter has its advantages, and I can probably salvage a lot of add-ons and things like memory, along with cables, from routers and switches that have crapped out or have been decomissioned. As the lab begins to assemble, I'll start reading up and asking questions about what, exactly, I'll need in terms of WICs, serial ports, that sort of thing. Hopefully, if I'm lucky, I can also lay claim to that PIX 501 sitting in the store-room, that isn't going to be used anymore.
So, I'm hoping to get some feedback on my mad plot. Any suggestions from the resident Cisco pros, any suggestions, recommendations, or other comments in general? Am I completely out in left field, or will this lab serve me as a start for CCNP, and potentially be a start for the other pro-level Cisco certs as well?