If tractordata.com is correct, your
B6200 has 15 hp, with 12 at the PTO.
My goodness, that is less than my 'lil BX, although you no doubt have the edge in traction. OK, with that out of the way, to answer your question...
Not a chance it's going to pull a 5' disk and do anything more than pull it across the yard so you can hook it up to a 28 hp tractor.
Just having a little fun. Yeah, it is too big.