You can compile a Linux Wallet from the source here: https://github.com/phoreproject/Phore/

I wrote a guide specifically for compiling on the Raspberry Pi, but most of the steps should be similar on other Linux: https://steemit.com/phore/@noxx/6djfe-compiling-the-phore-wallet-on-raspberry-pi

Specifying a different address for MN rewards is called multisend. I can't access my wallet at the moment and I'm not sure how exactly the syntax for this works, but you can open the console in the wallet and type "multisend help" and it should give you some information.

There are also links to the Phore Discord and Telegram channels on the first page of this thread, if you run into problems it is worth asking there