Welcome to TBN!
I have a few thoughts about your issues.
One question is are you using a hay ring for the rounds and that is why you have to raise so high? If so, we always would cut the webbing off, set the bale down and then roll the ring beside the bale and throw it over the bale.
Next suggestion would be to get a pressure gauge to check what kind of pressure your system is reaching. You will need at least a 3000psi gauge. My tractor is very similar to yours and the parts are basically interchangeable. I have mine set at about 2400psi with no issues.
Also, Kioti had a 8GPM and a 10GPM pump depending on the year. I upgraded my pump to the 10GPM and it made a big difference in the total system. Much faster and will lift the front end at idle. If you post a picture of your pump I can tell you which one you have.
Hope this helps!
