If you plan on competing, go as high as you can without straps.
Then add straps and try to overload with more weight.
Grip is important in Deads, as that is where many fail, when they still have
strength in the tank to lockout.
Deads aren't useless, bicep pump training is though.
Bench, Squat, DL, then add some assistance exercises. Makes your whole body strong, unlike "pumping your guns".
