Upload & Sell: On
Shooting MF is no problem because I started that way. However, this was with cameras outfitted with microprism or split screen.
I would guess that the longer the F/L with 'autofocus cameras' the more difficult - although again I have seen some reports that contradict this...
It would be the other way around: the wider the FL, the more ambiguous in the zone of focus is due to a thicker DOF. Especially with a well corrected lens like the 135 APO, you will definitely see the zone of focus would pop into view nicely.
I also wonder if you have to buy these lenses right now. Zeiss will come out with a higher performance lens line-up. And if you just want a handful of them, so you don't have to wonder whether to take that 24 or that 35 out for a walk, then it would be better to wait for a little longer. I believe the rendition of the 135 APO would be very much similar to this new line-up than it's to the current Zeiss. If I want to own only a few, I would certainly buy the best I can afford. But the best in this case would be what is best to you: IQ, character, weight/size, etc. So whatever you like in the current 35/2 right now might not be there in the new Zeiss. Such lost in transition can be seen readily in the 35/1.4, and in a lesser extent the 21/2.8 and 28/2.