The Ultimate is the way to go, the most accurate you can get for a few reasons
The tweak board that you showed needs to be on a "very" level surface. The Ultimate does not, it can be used anywhere.
Your tweak board needs to have setup wheels to insure that both sides are equal, cut foams are not the same size so getting it right is near impossible. The Ultimate has the CNC camber gauges, can't get any better than that.
Get out of the 80's "bubble float"
Use the Ultimate ... Welcome to the Twenty first century
I have seen Ralph Burch drive an RC car, It was an amazing thing to watch. So I joined his team and got the same car... XRAY and RC AMERICA