You're absolutely right that that does look like it would do the job, but once I start throwing in a computer as well it may start getting a little bit prohibitively expensive as you suggest. Definitely something to keep in mind though, thanks!
Looks like you can get a dedicated display with the Varia for an additional $100. $300 total is still cheaper than a GoPro, Raspi, and all the additional stuff you will need to make it work together...
