Chains for sure. Some ugly woods type and you will be a happy contented man!:o
Remember the rear blades have limits. When they are exceeded start working the bucket. Slower but you'll get thru.:D
With the wonderful upturn in the stock market why don't you just .....:) "buy a bigger tractor"
When the snow is too heavy for me rear blade I just use my front end loader. Yes its slow, but I do my best to think of it as just more tractor time - playing in the snow. Start taking bites that you can handle and it will get done eventually.
Oh, I make a point of using my FEL to push the snow back off the "edges" so more snow has a place to get put.
Then again, I have blacktop - not gravel. I've tried using my FEL on my neighbor's gravel driveway with only limited luck - I tend to pick up lots of gravel.
Chains are the answer. They make a BIG difference in traction.
In my case I had 4wd, loaded R1 tires, and plenty of weight. Tractor was useless on packed snow or ice. Added rear chains and winter traction problems disappeared.
I have a tractor setup that weighs 10,000lbs and r1's it sucks on hard pack or ice even with 4wd on. Even on slight grades. I don't have $1100 to get a good set of chains for the rear right now
In the order of cost effectiveness. 1. rear chains, 2. front chains if you have clearance on steering arms and loader parts, 3, load rear tires, 4, bigger rear blade with offset, 5, front plow 6.5 foot, use dump function for power angle. 6, add third function for power angle to allow front plow to float 7, rear 3PH snow blower. 8, six drunk relatives with snow shovels.