From just the pics, i'd want to get the tongue down just a tad. Probably lower the hitch head a hole if you can.
I'd also add a washer or two to the hitch head tilt so you can tighten up the tension on the bars by another link or two.. But, still have at least 4-5 under tension.
This is my setup with my old truck. It's hard to tell from the pics, but when it's all said and done, I've got the rear back to unloaded height and actually the front goes down a 1/4". I might actually have too much WD to the front, but it tows great and the same setup is working great on the new F150..
Good luck!
Mitch
2013 F150 XLT 4x4 SuperCab Max Tow Egoboost 3.73 gears #7700 GVWR #1920 payload. 2019 Rockwood Mini Lite 2511S.