I pretty much buy all the lenses I want, including choosing amongst all the autofocus lenses out there. But, in addition to a lot of L-series glass, I have chosen to get 6 manual focus Zeiss lenses, because their IQ is simply the best for every single focal length they come in. I currently shoot more with the Zeiss lenses than with the L-series.
Most people who have opinions on AF vs. MF does not have real experience with manual focus. They have tried to manually focus AF lenses, which is a totally different thing than working with a lens made for MF. I grew up with MF, so to me it is rather natural. But with a fair vision, on the right side of blind, and a precision focusing screen, it is absolutely no problem. I shoot anything but sports with manual focus lenses. But you have to practice. Portraits is absolutely no problem.
I would also state that at f1.2 and f1.4, an AF lens may very well miss focus. In a profile shot you get the temple or nose, instead of the eye etc. With a manual lens and an Ec-S focusing screen, it becomes very visual if you got the eye or not. Sometimes you also want to focus on something small behind a dominating front. No problem with manual focus, close to impossible with AF.
Shooting with manual focus primes does something with your photography. It is not necessarily logical and it will differ from person to person, but the average quality of my manual focus prime shots are better than those I get with both prime and zoom AF lenses. I believe it has to do with being more alert and focused on what I´m doing.
From what the OP claims to shoot, he will do just fine with MF. The only remaining question, in my view, is if he needs the focal length. Judged by the listed lenses he already have, budget is apparently no problem.