Chris, that a little dude riding that gray plug... how big he say that colt was? No offense, but you look like a stout dude... you may want to look for somethin' a bit bigger for a working horse.
Looks like he'd have a lot of vertical motion at a lope(which I hate)... would damn sure want to see some video of him loping circles/stopping before wasting a trip to look at him...
From that video he looks real raw... the guy is doing a good job of keeping it slow and easy from a training perspective, but I believe that's all that colt is capable of at that point... hence the lack of higher speed manuevers...
I like the bloodline, colt is built adequate... should be higher in the front end, deeper chest and a bit more length in back.... but again, he looks rough to ride, lot of motion... gives a man stomach cramps from tryin' ta keep a seat

Solid dink horse IMO... 2-3K as is...
How much are you wanting to spend?