Uhh, wilderness walker didn't say he was rich!
But i agree, the proper mapping software, some memory, 12v adapter, and GSAK are all good investments.
I also invested in the Legend HCX which I've been very pleased with. I bought the maps and a micro SD card to hold them, premium membership, Cachemate, a cheap Palm pilot on ebay, GSAK so that I can do paperless caching. I'm still getting the hang of it all, but feel like I'm pretty much set. I've got about $430 invested in our new hobby. It's worth the expense. Have fun.