Wayne,
What technical camera are you currently working with if I may ask?
I have an arca Swiss rm3di. I have 28mm, 40mm, 70mm, 90mm and 180mm rodenstock lenses, and a 120mm Schneider lens. I rarely carry more than 3 of them on any shoot that requires any hiking.
I tried an alpa system a few years ago, and it was a disaster - but that's not a criticism for the system, extremely well made. It was about me getting comfortable with it. With no background in view cameras, moving to the tech camera wasn't what I thought it would be. I decided to try tech cameras again after taking a Rodney Lough workshop. Much of what I do is adapted from his techniques for shooting his Arca system (he still shoots a fair amount of 8x10 film as well).
Many of my images are rotational panos, the 40 70 and 90 are the most commonly used. I use shift to keep the camera level, and use a pano rotator to set the degrees of rotation to allow me to work pretty quickly. I overlap about 75%, mainly because it allows more precise alignment with less curved edges at top and bottom, with the added benefit I can drop any shot that has some technical problem from the group and still have the scene covered.
I have 3 great systems, a Sony a7rII with good glass (still getting it setup), the phase one XF, and the Tech. My ratio is about 85% tech, 10% Phase One, and then a little bit with dSLR (formally Nikon d800, now the sony). the choice is based on the shoot ... occasionally I like to just explore and want to work quickly, but most of the time I have a preconceived composition/idea and I will use the tech camera.
Composition is by eye for panos (I visualize the area I want to get in the image, capture beyond that and finalize composition after stitching) For single shot captures I compose with live view. I also do all focusing with LiveView, in fact I sold my Kapture Group sliding back, and went with a direct mount rotating adaptor on the camera. No ground glass for me any more.
I just got the 380, so I'm hopeful the new IQ3 100 will work decent with tech system. Hopefully it manages shifts better than the 50mp one does. I've managed pretty well with Live View with a couple of tricks I've stumbled on, but cmos/live view would be a big deal.