How many two strokes engines will easily backfire from improper tuning and spin the prop off? The only point we are trying to make is that a four stroke is just not for a beginner. That's all. We have absolutely no idea about the experience level of the OP.

If the OP is comfortable with the four stroke, then, hey, go for it. If not, well, there are a lot of safe alternates until the OP has the exprience to safely run a four stroke. That's it. Simple enough.

CGr