As I don't have the device myself, I can't help with the practicalities, unfortunately, but as I mentioned earlier at least on banggood both the front light and the dual touch version of the n96 have the same amount of RAM. Ereader-store don't provide RAM specifications, but don't mention any difference either. Where did you see them listed with different amounts of RAM? Might be worth double checking with the vendor if that is really correct, it wouldn't make much sense... Onyx also list then with the same amount of RAM
http://boox.com/index.php/en/boox-products/n96-n96ml