Who makes a large professional hard case for cameras with oversize heavy duty wheels?

I need a case for my sports photography business with large oversize diameter and thickness wheels-not 2 inches like Pelikan models which will sink into a wet ballfield and no longer roll. Large wheels are needed to roll cart over waterlogged baseball fields, gravel, pavement, etc. Should hold lots of equipment-5 bodies, 8 lenses, 2 flashes, 6 radio remotes and maybe a laptop-in addition to support items like camera cards, batteries and rechargers. Perhaps 50-75 pounds of equipment.