I'm not a dev, but I'm running my Pandabank daemon on an arm (raspberry, 512M Ram version).
First, it took quite a while to compile, and needed some additional swap space. Second, the daemon itself requires quite some RAM to run.

You should probably check for yourself if your NAS can handle it, and please don't be disappointed if it doesn't. But do experiment.

If your NAS is configured to be reachable from the public internet, you should also take additional steps to secure your wallet.

Remember that both the configurations and the blockchain are stored in the user account's home directory, in .pandacoin
You should probably set
server=0
daemon=1
in the .conf file (can't remember the details, tho), so you can run the program in background.

Copy the program to /usr/bin
You start the daemon simply with
pandacoind

then, wait for it to sync. you can check the status with
pandacoind getinfo

When the block number has reached the current block, you can start staking with
pandacoind walletpassphrase 9999999 true

Remember to lock the wallet!

You can just copy your windows wallet.dat to linux; I had a strang equirk which showed different addresses for my accounts on windows and on linux, but I can recieve my pandas through both addresses, so that's ok.

Have fun!