Will this tractor pull a 12 foot Field Cultivator With Harrow ? How about a 12 ft chisel plow?
I'm with tiredguy, 6 foot is about maximum on about all the implements.
Even a 6 foot chisel plow is probably going to stop you dead in your tracks!
I have a 6' 9 tooth, spring tooth cultivator/plow and with a tractor that's about the same size as yours, in sandy soil, it can stop it dead in it's tracks!
I can run a single tooth ripper, about a foot and 1/2 in the ground before it tries to stop me. It's not always the lack of HP that's the problem, it's the weight and traction that get to be an issue.