Yeah, I need to get the mechanical things fixed first, the driveshaft vibes are only there under acceleration or a heavy loading, so I am thinking that new ujoints are in order, but it may be I need to change the angle of the shaft or move the diff horizontially or a combination of all 3.
Once I get that fixed, then I can work on the death wobble problem. I look out the window and I can see the front wheel flopping left and right. It is not consistent in speed when it occurs and i able to stop it if I feeling it starting so I start slowing down and hard on the brakes seems to keep it under control.