As you have a Kubota 'Grand L' 3560 with pinned stabilizers and telescopic Lower Links, a Quick Hitch seems superfluous to me. While a
correctly installed Quick Hitch might be a tad faster at mounting
compatible implements they introduce their own idiosyncrasies with implement compatibility and PTO length compatibility. If you go with a QH you cannot use your telescopic Lower Links, they have to remain "in" for the QH to function.
(I am a great believer in the KISS Principle. The Grand L Three Point Hitch is a perfect example of KISS. I am usually willing to pay more for less.)
Consider carefully before moving in Quick Hitch direction ~~~~~~
2 X 12" plows are still produced by many suppliers. 2 X 14" plows are not. As you have sandy-loam a 2 X 12" plow should be sufficient ~~~~~or even a
1 X 12" for
1/2 acre. A 1 X 12" is easier to adjust and takes less space to store.
What equipment are you going to use to reduce plow furrows? A Disc Harrow is the "book" succession implement, followed by a Chain Harrow or Spike Tooth Harrow. However, a Landscape Rake with gauge wheels is a good improvisation. ( A 14" plow will leave you with 2" higher furrows to deal with, relative to a 12" plow.)
I pull an Everytfhingattachments.com sub-compact 1 X 12" plow behind a BX tractor in a small but expanding commercial Blueberry field. This plow has been excellent. The moldboards and other plow parts are the same on ETA's 1 X 12" and 2 X 12" plows for compact tractors like the
L3560, only the frame height varies. ETA also offers 14" plows.
Give ETA consideration:
Garden Tractor Plows From Everything Attachments