One thing you might want to keep in mind - virtually every DL50 in my field (4 or 5 so far), had to have the bearings replaced after about a year. In some case, when the bearing parts floated elsewhere in the engine, the ring or cylinder, got damaged as well.

It's a strong and cheap engine, but definitely uses cheap bearings.

After the repairs, people found themselves suddenly at the cost of a DA-50, which seems to use better bearings as they do not fall apart...