A big gap between the tyre and the frame just doesn't look right. I looks like the frame wasn't designed to take those wheels (it wasn't)
Long reach brakes are more prone to juddering.
Braze on cantilevers solve the juddering problem. If you can't get brazing done, an alternative is to use Resilion cantilevers which bolt onto the frame. These are antique, and you won't be able to get the 'split' cables they need, but that doesn't matter because you can use a mafac centre pull type hook and a straddle wire with a solderless nipple on one side. All you've got to do then is to figure out a way of making some suitable brake blocks!
It's undesireable for two reasons:
Braze on cantilevers solve the juddering problem. If you can't get brazing done, an alternative is to use Resilion cantilevers which bolt onto the frame. These are antique, and you won't be able to get the 'split' cables they need, but that doesn't matter because you can use a mafac centre pull type hook and a straddle wire with a solderless nipple on one side. All you've got to do then is to figure out a way of making some suitable brake blocks!