TRR.. not meant to be terse. Just straight up and to the point on limited time. The OP asked an opinion and I gave it.. on a horse she is looking to purchase on a limited budget.
Small, round hocks are a reasonably serious fault. Not keeping up with a horse's feet can be a red flag (too untrained to handle? Owner having $$ troubles? While the first one can usually be rectified, the second can lead to less than truthful advertising). Fat can hide a lot of faults (and the extra weight on a yearling can lead to stuff like Osteo Chondrosis and Epiphysitis).
I just call 'em as I see 'em. Not meaning to be mean.. just if you are going to purchase something and are on a budget.. it would seem straight up opinions would be the way to go.
I have purchased and rescued and turned around a LOT of horses. This is a yearling and there is many a slip twixt the cup and the lip when you are dealing with a horse that is growing. It is wise to keep in mind the old saying, "Tops may come but Bottoms never." IOW's the legs she has will not change at 12 months old.
To the OP, from these photos I cannot say she would do that well in halter. I would place her below a horse with better hocks and better hind leg angles. I would also place her below a horse with a more open shoulder that lays back better..
No idea on the WP.. as that is training and attitude as well as conformation.
Who do you have lined up to train this (or any other) young horse you purchase?