I'm certainly no authority on the capabilities of your tractor. I'm guessing a 2-bottom plow would be a little much though. Especially so if you're wanting to break compacted pasture land. Animals can (and do) compact soil to a far greater extent than any wheeled equipment can Years of paturing can leave soil like concrete. You're looking at some of the toughest plowing conditions you're apt to encounter.
Moldboard plows CAN help. But they have their own set of limitations when it comes to reducing compaction. Typically, they'll work to a depth of 6" to 8". (+ or -) From that point on deeper, they actually can (and will) make the problem WORSE in many soil structures. Some AG engineers explain it a little different than "making it worse. They explain it by saying moldboard plows will make the difference between upper layers of soil and soil below the working depth more pronounced. Crop roots that flourish in upper soil layers hit the "plow pan" and run out of gas. But....ya gotta do what you CAN do. 8" of loose seedbed is better than NO loose seedbed.
Best option in MOST conditions is a chisel plow, OR, years of recovery time with many freeze/thaw cycles to allow natural "heaving" to break compaction. Since the latter lacks that "instant gratification" we often need, the former becomes the best option in most cases. Moldboard plows become a fair alternative to either.
Plows do their best work when you can maintain a REASONABLE ground speed. Most "modern" plows need 4 to 5mph. (Modern being a relative term. plow design has slowed since the 1960's as they see limited use in most areas nowdays, and have but a limited following. They are more popular in Europe as opposed to the US, but are loosing ground (pardon the pun) even in European markets. What I speak of as "modern" are plow designs from the 1950's through 1970's, which are typical of what is available in US markets)
So....long story short....If you have settled on a plow, I'd go with a smaller 1-bottom version that you KNOW you can maintain a reasonable speed and depth in harsh conditions.