I would love to see a bigger photo of your front mount. I used 1-1/2" square tubing where the suspension was bolted:

I jacked my entire dolly up which worked real well for me. I put the dolly on jack stands at the needed height then built the frame work:

Since mine is not adjustable I will have to re-weld cut and re-weld to change the pivot point. Your pivot point looks lower then mine. Where is it and how do you like the pivot point you have?
Gary