Personally, I'd buy a 2210 and a WiFi CF card (only #25!).....Oh, I have!

Seriously tho, what I like about the 2210 IS the fact that it has the two expansion slots. I'm also getting an SD memory card, and by leaving the CF slot free I will be able to switch between the WiFi card and the CF GPS card(to be purchased as and when funds allow).
As for WiFi at home - easy-peasy!

I've not had a home puter for very long and found it easy to set up. As I was starting from scratch, I bought a wireless router, but an access point would do just as well. If you do go wireless, don't forget to set up the security!
HTH
Iain