I've been implementing a similar regime on my smart phone for the last few months. After cracking a previous phone and resorting to a brick phone, I remembered how much I'd enjoyed the time I used to have with out a screen, either to read or just think.

I was eventually swayed back onto a smart phone after moving to a new city (for google maps) and now use that almost solely along with music, and occasionally chrome for fact-finding.

Would definitely recommend giving it a couple of months trial!