Seriously thinking of going to 80ft (24metre) seeding instead of 2 40ft rigs. Foward fold is the only way to go as we travel 25km between farms. I can get one made in australia but like the look of the JD DB80 bars. The plan is to maybe import a bar and put single disc units on it at 20inch spacing to plant wheat. Can you buy these bars bare without openers? Would a JD 8360RT tractor pull it at 12km with a 9000litre aircart?