I'm planning on buying a dreamcast today and I was wondering how many memory cards I would need to get.

I want to get
Unreal Tournament
Shenmue
Jet Grind Radio
Sonic Adventure
Grandia 2
Skies of Arcadia
Virtua Tennis

So how many memory cards should I get, also if you have any recomendations for games tell me. You'll notice that soul caliber isn't on there because the second one will be coming out soon so I'm just gonna get that.