Quick lab question

sexion8

I'm setting up my home lab and have a simple quick question...

My current equipment is as follows:

2 MC3810's T1/E1 wic and a slew of other modules (they do normal routing just like a 36xx but I bought them for QoS/VoIP stuff since they have a 6 port fxs module)
1 3620 w/T1 wic
1 2524 w/T1 wic
2 2501 (serial/ethernet)
1 Pix 515 (I plan on doing parallel studying for the CCSP)
Cat 5000
Cat 2900

Is there anything I am missing here? Any suggestions advice appreciated.