No .. Peppermint is a Linux distribution.
An SDcard and an SSD are 2 TOTALLY different animals
an SSD is the internal drive (as fiitted when you bought the 701) .. like a hard drive but with no moving parts.
an SDcard is an external storage card .. like the one you put in digital cameras, and is MUCH slower than the internal SSD.
What I was saying is that if the problem is that your current Linux installation is messed up, you may not need to get anything beyond an SDcard which you can buy yourself (and just stick it in the slot on the side of your PC .. then install Peppermint instead of your current OS.
Before going any further .. what exactly is the problem you're having that makes you think adding storage and RAM may solve ?
If it's a 701 4G (and not a 701 SD or 701 SDX) you cannot replace the internal SSD .. ASUS (stupidly) decided it would be a good idea to solder the SSD directly onto the motherboard, so it's not replaceable/upgradeable