The Vent project was based on the Arduino Nano processor as most of the rapid prototype team came out of the Amateur Radio community and were familiar with the Nano from the uBitx SSB transceiver(hfsignals.com). It was constantly on the edge of running out of RAM and EEPROM. If you get above 70% memory utilization at compile time you stand the chance of seeing a stack overflow at runtime. In the end all the 3rd party libraries were replaced with internal code with the minimal required functionality. Arduino libraries tend to be bloated, blocking, and poorly documented. That said, it's an easy system to learn and works well for personal hobby applications where setup(), loop(), and delay() aren't an issue. It's much more involved to setup a pseudo real-time environment.
There is a way to tell the compiler to move constant strings into the EEPROM. I'll look it up and get back to you.
There's never enough time to do it right, but always enough time to do it over...