I purchased my chains from tirechains.com for my rear tires only. Even though I purchased by tire size, I still needed extensions and cross links to get them to fit. Tirechains sent me the extensions and cross links for free & because of the trouble, they sent me an upgraded chain tensioning kit. It took me a while to get the chains cut to right size and adjusting the tensioner. I cut the chain to exact length to fit the back side of the tire, then use the adjustable chain connection on the front to tension. I had to modify the tensions springs so that they would have more tension by using a smaller center ring. Now, I can put the chains on in about 20 minutes. It's good you're doing this during the warmer months.
I find that having the chains on the rear is all that I need. if the tractor drifts slightly when moving snow, I touch one side of the break to pull the front over. I use the the front tire slip, to rotate the tractor in tight spaces by turning the front wheels and breaking one rear wheel hard. I live in the central Adirondack Mountains of NY and we get a good amount of snow. I usually put my chains on in mid-January and remove as soon as possible, usually in early March.
Build yourself crates to store the chains so they dry out and don't rust (much). Easier to carry too.
I use a ballast box and FEL. Thinking about a 3 point blower.