Are you planning on jumping her over 2'6"? If not, keep your money in your pocket and not on the boots. They are good, but until she has her foundation and you are actually working her hard IN a sport, leave the boots out of it.
In the first photo of post #6 her toes look a might long and she is a bit "slipper footed" behind. She might benefit from a trim and light plates for a few months to get her heels longer and her toes shorter. The long toes do not help her slight back at the knee and they can be a source of tripping and excess extension of the tendons.
In all reality, if you can find someone who knows what they are doing to look at your horse 'hands on' and advise you, you would be better off than taking advice on her (or her conformation) from an internet forum.
I can tell you what I see in the photos. What I saw standing next to her might be the same or more or less.
I like to temper what I say with "Advice is usually worth what you pay for it!"
There is something about the outside of a horse that is good for the inside of a man. ~Winston Churchill
) Dinosaur Horse Trainer