I planted four in 2011 and one died within days, so I was down to three. At that time Gurney's was selling them in pairs, and when I notified them of the one that died they said they weren't shipping anymore that year, but would replace it in the spring, and so they sent two new plants in '12.
But these are basically 10', and maybe 11'' at the tallest point if you count those few that want to go a bit higher. (I did take the biggest one down a little one time, but can't remember if it was last year or the year before, but not enough to have much of an impact)
I recall your getting basically the same production out of a more manageable size bush as I'm getting out of mine. You can't know how ENVIOUS I AM!!!!
Last year out of the 5 CJ's we got 33 gallons, which is 148.5 lbs or 29.7 lbs per bush average... but we worked for them! And we also left the ones in the higher reaches. Had just had enough by that time!
Anyway we got another 1/2" of rain overnight and the wind blew hard. Knocked some cherries off. (I'll have to look back, but I think this very thing happened last year too, and put a bunch of fruit on the ground)
The camera picks up the cherries on the mulch better than the grass, but they're all over in the grass too.
Here's a shot for perspective.
And here is another that has a 10' board and the mower
But I could tell the cherries plumped up a ton from two back-to-back rain events, and yet I've seen no cherry rain crack so far, so I'm keeping my fingers crossed.