Before I start I want to apologize for the command mix up.
You can actually use Android devices to pool mine. There's a video on it from grcpool.com
https://www.youtube.com/watch?v=dB-Hmg94E6s
For backing up the Gridcoin wallet you only need the wallet.dat and the .conf file. I don't know what the dumpprivatekey file is and I've not had a problem going without it.
For the syncing with the manager, it will also happen automatically.
Glad that everything is working!