Quick questions?

1. okay my acekard is a fake as i was told, but anyways since it is then can i combine AKAIO1.4.1 with the r4 firmware?
2. Can i get rid of the tons of free space in the roms, like trimming them? How and what program is the best for doing this?... i checked the site but cant find any help.

For trimming, use Tokyo Trim.
http://techsuki.net/nintendo-ds-rom-trimmer/You just run the program, choose the ROM you want to trim, and start. The amount it trims off depends on the ROM, some games have a lot of free space, others not so much.