I've got an Amiga A500 (6meg plus 2meg expansion in a 80meg Hard Drive) I can sell you?
Just a wee bit of advice about hard drives.
I would try and avoid Maxtor drives, certainly anything above 40gig, seem prone (to me anyway) to error, I replaced (4) 60 gig Maxtor drives, when 2 completely failed, making horrible crunching noises, and the other 2 started to not be found at boot up.
I took them back and got (4) 80gig Seagate drives, they are much better, a better build, and have been fine since.
Also, might be an idea to get (2) HDD's in there, 1 for the operating system, and the other for data, that way if you need to re-install at any point, you won't lose any data.
I'll leave other folks to answer the other points!
Best of luck with putting it together yourself, wear a baseball cap when you do it, just in case you start sweating a lot (especially when fitting the main chip!)
