I also have trees. You should have growth issues due within 12 to 24 months.
I was up to high. Going lower to the ground, the offset angle can clear.
My only option was a ground mount. Worked better than the original way.
From what you learned you should be able to do it yourself.
Find an old legacy single Directv dish, mount to PCV pipe in the ground, 2 to 3 feet off the ground. I got a way without cement. I bypassed using the dish 500
Quad LNB, as it adds to much weight, using a twin. Pratice with single dish 110 settings.
The only problem I foresee, these new recievers from both E & D, are manufactored not to be able to aim using their signal stregnth, you need a meter or must already be aimed having signal from that mounted location.
I also noticed firmware, a couple of years ago changed. If the dish is perfectly aimed, or if you were joining 2 dishs together. The signal meter says your 2nd dish has no stregnth, when its really does, until the switch test is completed.