Other than the FEL, Gamer, I bought no toys with it. I've got plenty already.
It has about 17 hours on it now and handles the Woods BB720 brush cutter quite well. That's about all that's been on it.
I almost never run full PTO rpm on any of my tractors; especially when bush hogging. I try to keep the blades sharp and run at RPMs that are about 20% off peak. This cuts quite well and there's lots less kinetic energy to shock the driveline when the blade hits something.
The L4300 turns around 2460RPM to get 540 at the PTO. When mowing, it's pretty happy around 1900 to 2000 engine RPM....but with a smaller 5' BH. It sees a lot of use twisting and turning around the trees; very maneuverable without the FEL.
For the hard going, I use the MX5000/BB720 combo. Because the MX5000 reaches 540 PTO at 2700 engine RPM, it seems happiest running 2100-2200RPM when mowing. Being new, I've not pushed it above that. The engine is very smooth and fairly quiet at these RPMs, so it's not bothersome. But I imagine 2700 RPM all day would leave your ears ringing.
Bob