I agree with the others.. I'd pass, it seems like you're making excuses for his confirmation flaws saying that those are traits that you like or are similar to your mare. Bloodlines aren't special and as an older horse with his conformation and lack of training I'd pass. With how the market is in my area I wouldn't take him at all.
I completely agree with SH when she says you've pretty much made up your mind, good luck.
IMO, his back is a good length and he has a nice shoulder. Neck tie in would clean up A LOT with proper work. His bloodlines I like quite a bit up top. Old school lines. My cousin runs two horses bred like him and they are smoking fast. She does well on them. These new bloodlines are taking over and everyone is forgetting where they all actually came from, the foundation of all of the new lines.
He doesn't have a lack of training. He just has a lack of specialized training. He is not an unbroken colt. He was quite broke in the past. It's just a matter of a refresher. I'm confident I could probably have him patterned and hauling by this fall. IMO, an older horse is more physically and mentally able to progress along than a young horse, and at a faster pace. Especially when they had a good foundation.
The members here are actually the only people who have had much negative to say about him. The high percentage of people I have talked it over with think he is a nice buy for the right price.
If I had made my mind up, he would be in my barn already. I just don't agree with what has been said here, and apparently neither do most others I have asked.
As I said before, it will depend completely on price. I am not about to pay a lot of money for him in this market, but most of the prospects here on the east coast are outrageously priced.