In order to succeed:

Mistakes in assembly of the kit can make the airplane crash. Do you know what they are?

Mistakes in breaking in the engine can make the engine almost worthless for a beginner to learn with. Do you know them?

Mistakes in setting up the airplane for flight can kill the airplane on it's first flight. Do you know what they are?

Mistakes in assembly can make the engine almost impossible to start and unreliable to run. Do you know what they are?

Mistakes in setting the engine for flight can make it unreliable for flight and doom any flight. You know them?

there are more, but these ought to be enough..............

Think it over.

BTW, even if you have the misfortune to blunder past all the pitfalls and somehow get your first airplane into the air for it's first flight, almost every airplane will need to be adjusted on it's first flight. They don't usually fly their first flights "straight". Experienced pilots often have their hands full with airplanes on the airplane's maiden flights. Airplanes do not fly their first flights dependably enough that someone flying for the first time will be able to learn to fly it.

You won't know how to fly so how are you going to know how to fly an airplane that isn't flying right?

Find an instructor.