What are good Wheel Loader qualities for a muddy site

Hi all, I am up in New England and own a compost site. It is not muddy with clay, but rather organic material. I have been using a track skid steer (2 yard bucket) for the last 2 years to move material and turn my piles. However I need to upgrade to something with a larger bucket. I'd like to be able to move 3 -5 yards at a time so I have been thinking about a wheel loader. My site is about a 2% grade and is compacted topsoil with compost mashed into it. It is dry in the summer and fall, but wet in winter and spring. In the wet seasons I can use the tracked skid steer to move what the wheel loader can't. However I'd like to get a wheel loader that has a good chance of working at my site. Imagine driving down hill to scoop into a pile of compost, the ground is wet under your front wheels and you are scooping 3-5 yards of moist compost (which is not as heavy as loam). I imagine that when you pick the scoop up and then you try to backup, alot of your weight is on the front wheels and they will make ruts as you backup.

Do you think a larger machine with its GP 3-5 yard bucket? or a smaller machine with a light material bucket? I was thinking the smaller machine option would cause more ruts because more of its weight with a full bucket would be on the front wheels. Other questions I have... Can I air down the tires to help float? Is it possible to get wider tires? Do the drive trains have options that I should look for (limited slip differential)? Any info is helpful. Thank you

-Andrew

What are good Wheel Loader qualities for a muddy site