Hello, Albert. Welcome. Gosh, twenty acres of fields to mow-- that will take awhile-- like theoshin suggests, try to trade up from 72" to 84" wide near finish mower, if possible. Not sure what "rev." of TC you have ("C" or "D") but make sure to keep the radiator area clear of grass clippings.
Regarding other attachments, ditto the recommendations on the forks. I have found my
Anbo Grapple Rake endlessly useful. I've used it to rake, gather, and move rocks, boulders, sticks and brush, extricate and move logs, etc. And as I've become more skilled, I've used it many times as a big pair of Vise-Grips. For keeping my gravel roads looking good, I use a
84" Box Blade Grader Box to level out pot holes and distribute dress coats of gravel, and I use the
Bobcat 84" Angle Broom (rotating brush) to sweep the asphalt driveway. For cutting woods paths and clearing tall, tough grass and weeds I really love the
Brushcat. Good luck!