A single gondola line is going to do at least 3000 per hour. (Thats what the La Paz system does as a minimum) If you were to put them in at the MK area resorts, they would put in 4 direct lines. Thats 12000. And if it was me, I'd run two between TTC and MK, so that would be 15000. (And if this was the plan, they'd clearly do a 5th for WL, but that number doesn't matter here).
You're missing out on the biggest thing. It has to do with peak numbers. Anything can handle the crowds during the day. Monorail is fine for that. But at peak it can't handle the rush. That isn't in question. A flexible system or one that is constantly moving both handle all crowds better than a fixed system based on a train. If the monorail track was replaced by a PeopleMover? That is the actual perfect solution. Constantly moving, 'futuristic', electric, pretty reliable.
Also, your 'sight lines' thing is thinking this is going to be something its not. These are not going to be MK Skyway height for the entire trip. They will keep them decently low to the ground because a) its cheaper and b) there isn't any reason to go that high.