I like the simplicity...I listened to a pretty good interview lately featuring Nick Radge who has run a really simple trend strategy for decades that you might enjoy...perhaps geared a bit much towards neophytes than you would like but still some decent stuff in there (linked below).
I think you really have to be comfortable with a loose stop for this to work...like approaching 20%. I would back test the 4wk breakout using various stops for a better idea what would work best in the current market...then maybe try 5wk, 6 wk, etc...