Id like to build a stand for my 84x24 tank where the front is completely open (no center supports). Can I accomplish this with 2x lumber laminated w/ plywood, a all plywood diy laminated beam, a purchased glulam, etc that will be strong enough to span about 6.5 feet free of support? The rest of the stand will be framed with 2x4s and sheathed in plywood. Thanks for your opinions