the a1200 is actually more bang for the buck when you list these uprgades. You can probably get a cheap used a1200. You can run most classic games on the a1200 as when running them from HD using whdload + you also get to play the newer aga games that didnt run on the a2000 because of no aga chipset.
Both accelrators, network cards is cheaper and much easier to get for the a1200. It also has a ide controller, so you can use a standard ide hd and ide cdrom, though i guess you will get better perfomance with scsi..
