Gotta say YES to the toothbar. Invaluable tool for uprooting and digging with the fel. I also went with unfilled tires. I have had two flats already and they took about 2-3 minutes to plug. If the tires were filled it may not be that easy ( depending on what they are filled with). I find that the backhoe or boxblade are ample ballast for a full bucket. Enjoy your new machine!