Electricians on FABO - I want to add a 60Amp sub panel

UPDATE:
I got an estimate from an electrician that came in at $1500....and he would use aluminum #2 wire.
The distance between the garage and house is 27 Ft. and although I've had two back surgeries in my past for a herniated disc, there is no way I am paying that just because of my reluctance to dig.
From talking to the electrician, I know it has to be buried 18" for code.
The panel I want to buy from Home Depot is a GE 125Amp. It does not have the spot at the top to install a 60Amp main breaker. I was told I didn't need one - if I want to shut off power when in the garage, I could shut off all the breakers. Any thoughts?