simple guide to use wood on R4i b9s

i am switching from supercard DS2 to R4i-B9S which has wood on it
which file system is best for it?

also,i want to know how t :
1- make save stats.
2- open cheat menu and activate and deactivate certain cheats.
3- exit the game and use other game without exiting to 3DS menu.
4- change the save type of the game so i can use my old save files.
i am using R4i-3DS V1.84b files