Goomba works well, and Goomba Color allows for GBC emulation as well, though Goomba Color does not have savestate support so continue using the black&white Goomba if you wish to keep those.
Max size is 32 MB, or whatever the max for your specific cart is. For instance, with the EZ-V 3in1 if you want to run games from the 3in1's RAM, you're limited to 16 MB, while if you're okay with running them from NOR you can get up to 32 MB.
Max size is 32 MB, or whatever the max for your specific cart is. For instance, with the EZ-V 3in1 if you want to run games from the 3in1's RAM, you're limited to 16 MB, while if you're okay with running them from NOR you can get up to 32 MB.