While technically the angle of view depends on the sensor size for the same focal length, in practice it makes sense to compare lenses with the same “equivalent” focal length, which then have the same angle. Eg one would compare a 14mm micro 4/3 lens to a 28mm full frame.
For most mounts these days you can find a plethora of lenses with various apertures, so each sensor size has practically everything. Of course, the bigger the sensor, the bigger the lenses (on average).
While I am not familiar with this particular model, a couple of years ago I was seriously considering buying a full-frame MILC, and I was in the lucky position of being able to borrow a Canon Rsomething and a couple of nice lenses from a relative for a weekend. (My relative is a retired photojournalist with GAS, constantly hunting for bargains, buying, trying, and selling used gear. In the last 2 years he bought and sold 3 various MILC kits and surprisingly made a profit overall).
I ended up with some nice pictures and very fatigued hands, especially the wrist. It is not only the camera body, but also the lenses, they protrude a lot and the center of gravity is significantly ahead of the grip, and ergonomic nightmare unless you are using two hands all the time (which I was not used to).
I have been skeptical of full-frame systems ever since for hobbyist/enthusiast purposes. The bodies got smaller, but the lenses didn’t, not by much. And a smaller camera body has less surface for gripping so a lot of people buy a bracket to hold the camera.
In the end, a lot of my experience with various camera systems can ultimately be described as learning about myself, not cameras. I learned that the larger the camera kit, the more likely it is that it stays at home after the initial enthusiasm. I really hope that as sensors develop, some company will revive the 1" sensor MILCs. In the meantime, I am sticking to micro 4/3.
Regarding your practical question: if you live in an area where it is feasible, I would just rent a body and a couple of lenses. Yes, it costs money, but some rental companies allow you to buy the gear and deduct the rental fee.