How old is she?? Overall I like her,she does look better in the last pic you posted.Her back is a tad long but not bad, She is common headed,don't see she is posty hocked
? Biggest thing I noticed is her weak topline. Her topline is reason I asked her age,as that is one thing that an older horse starts to loose/looks weaker.
I think for the things you want to do with her she is going to be good match