Just wanted to give an update to my mobile miner setup (I'll post pics of the little space heater later).
I went with an Odroid N2 with 4GB RAM that I'm going to use for running some core wallets for staking and to run my miners.
I'm now getting 1.050 Th/s at a full 775MHz on voltage setting 7 for the past 4 hours. WU has been settling in around 99%, which has me much happier than when I was trying my pi and it kept autotuning down and couldn't be turned up more than 588MHz.
Setup is HP1200 power supply, R606 miner, Odroid N2 SBC running Ubuntu MATE 18.04 on an EMMC and powered by a 12V 2A power supply. The Odroid is connected to wifi using a USB wifi adapter and I'm running the current cgminer that I installed today.
https://imgur.com/a/6FvJ05t