Welcome to the forum!
Never dealt with an OB (or a Legacy, for that matter) on the beach, but if you're worried about ground clearance (and I would be too), just go with the OB. How well does your Cruiser handle it right now (clearance-wise)? If I remember correctly, the 100 series Cruisers were somewhere around 7-8"? Most of my Cruiser experience has been with my dad's lifted FJ60 :-D
Never dealt with an OB (or a Legacy, for that matter) on the beach, but if you're worried about ground clearance (and I would be too), just go with the OB. How well does your Cruiser handle it right now (clearance-wise)? If I remember correctly, the 100 series Cruisers were somewhere around 7-8"? Most of my Cruiser experience has been with my dad's lifted FJ60 :-D