I would skip the N+ and go straight for the CCNA
Ebay is your best bet. Check out seller irp70, he is not the cheapest but has a good reputation and gives out advise.
Take a look here for some lab advise and free labs:
For your CCNA lab you really need at least 3 routers (2610s are fine with a WIC-1T card in each router), 2 switches (2950s) and a cisco router to act as a frame realy switch (cisco 2521). This is a great lab for CCNA and will serve as a basis for future cisco study.
I'm currently working towards my CCVP and here's an old pic of my lab:
If you need any help, just ask.