I would strongly suggest you look at a tractor with a hydrostatic transmission for both of the 2 tasks you are describing. Both loader work and mowing are more quickly and easily accomplished with tractors that use hydrostatic transmissions. As for tractor size, I have a 30hp Kubota
B2910 with a FEL, which is a class II tractor, and I consider it too large for mowing on my property. I have about 12 acres which is very hilly with a lot of trees. The two tractors that get most of our mowing chores done are a Cub Cadet garden tractor and a NH TC24D (class I) tractor. The New Holland can get into 90+% of the places the Cub Cadet can get into, but there is no way the larger Kubota can get into those spots.
Also, if you are planning on using your tractor as a mowing machine after the garage is built, you might want to seriously consider a mid mount finish mower (MMM) instead of a rear mounted 3pt mouted finish mower (RFM). My New Holland TC24D is equiped with a 3pt finish mower, and I can say that if I did not also have the Cub Cadet the only way I could mow in some areas of my lawn was if I had a MMM because of the way we have our landscaping laid out.
I won't speak to the specifics of the Century tractor, it might be a great machine at a great price, I've never used one so I don't know. I do know what it takes to mow a lawn and I do know that a smaller tractor is a heck of a lot faster at mowing than a larger one if you have to work around trees, shrubs, flower beds, the house, etc. For field mowing it is tough to beat a big tractor with a big mower. But if you are talking about 2 acres, I would recommend you consider a small frame tractor with a FEL, probably something in the 24 / 25 hp range. Look for a tight turning radius. Look for a quick detatch FEL. Look for a mower deck that will work with the FEL frame still mounted on the tractor (some won't raise fully!).
And since you are new, I STRONGLY recommend only buying a tractor with a hydrostatic transmission. You need a gear machine for plowing fields, but you don't sound like you will be doing that. HST transmissions are simply faster, easier and safer for mowing, FEL work, etc.