3ds sd card

Hello, I was doing research on 3ds storage and I have a few questions.

1) can I use a 64gb sdhc

2) can I use 64gb or 128gb sdxc if I convert to fas32 and of so, how do I do that?

3) can I use a dual micro sd card adapter in a 3ds? Here's a link to an example of one:http://www.amazon.com/gp/aw/d/B001RPEJA4?pc_redir=1405252717&robot_redir=1

thanks!