Hello, welcome :-)
#1 check out MakeCD or BurnIt, I have the former and it works nicely.
#2 Have a look for the Sana2 drivers for the XSurf, then you can use the Genesis IP stack that comes with OS3.9 with it.
#3 Make this #1 ;-)
#4 Good luck with that! Maybe someone here can help, if not a Wanted on
www.AmiBench.com does wonders.
#5 Not sure here, there are '060 colutions for the A2000 that do crop up once in a while, and towering an A1200 takes alot of work - it might be worth holding out for something that'll go right in.