The route I chose was to get one monorail and one press camera. That way I have one camera with all of the movements I could possibly want, and one small portable camera that has a focal plane shutter for use with barrel lenses. It also has a rangefinder for quick shooting, but that rarely gets used (since it only works with one lens). And somehow, buying those two cameras was still cheaper than buying one decent field camera!
And to be honest, movements are overrated. I basically just use front rise or nothing. Every once in a while, I'll use a front forward tilt, but that's about it. And I still do a lot of landscape photography with my monorail. It's heavy, for sure, but even a "light" 4x5 isn't going to be light. To me, the difference between 30 lbs of camera gear and 33 lbs isn't significant.