Re: What should I do??
Sorry to weigh in late with this info... but wanted to add to your "database." If I'm not mistaken, the CK27 is the same as the Bobcat model CT225 (anyone, feel free to correct me if wrong). I've been researching Bobcats/Kioti's lately. The CK27 is on a much heavier frame than the CK20. There are two more models built on same frame, but with ~ 5 & 10 higher horsepower. See chart attached.
(Here's the origin of the attached chart... more info there): Compare Compact Tractor Specifications - Bobcat Company
From reading a lot of posts on TBN, there are quite a few people who comment that the CT225 is underpowered for the size frame. Do your own searching, but I suggest you check out the Kioti CK27 and Bobcat CT225 threads, and then make your own assessment. I'm sure there are also a lot of folks who are happy with it too; not meaning to cast dispersions here.
The idea here is to just give you the benefit of other TBN'ers experience who own the same tractor, and then you can make an informed decision. If you're only on two acres, some of the "underpowered symptoms" (e.g. high range not as powerful as it could be) may not be any issue at all. Again, look, read, and make your own decision for what's best for you.