If there's a lot of games on disk then I'd go for it. Only thing that's bugging me is there's supposed to already be a 512k fastram card in the German 2000's CPU slot, which isn't in those pictures.
It might be the case or motherboard that might stop kipper's ram board from fitting. The only way to know is to try it.
If it doesn't fit, a simple adapter can be made easily enough, if you want to solder. Just a veroboard, some wires, a socket, and two rows of pins. Like $5-10 of parts.
Or you could just buy it for all the stuff, and not bother with the actual A2000 unit.