I can only offer my opinion, based on experience, and, of course, our tastes and needs will differ. My opinion is that a Crown Graphic or Super Graphic would be ideal for you. They are inexpensive, light, and very portable. Crowns and Supers fold up to the size of a kids' lunch pail and easily fit into a small bag or backpack with everything else you will need. I used both for quite a while and they are great for portraits. The Super can also do a pretty good job on landscapes. They set up in seconds and you can even hand-hold them (after all, they are press cameras). And roll film backs for either are not that expensive. Once again, it is just my opinion, but the idea of carrying around a monorail, on a tripod no less, gives me a migraine.