1 word (DON'T) The fumes can be very posionous and noxious. I would just drain the tank, pull the glow plug, crank it over a few revolutions with the rotostart upside down.

Then I would put a drop or 2 of marvel mystery oil or afterun oil or wd40 in the cylinder and in the carb mouth, open the slide.

Then crank a few more times outside, replace glow plug, and air filter.

Then wait till you have good decent temps to break it in right.

I understand your excited to get her fired up, but just be patient and try to wait.

The exhaust note is fairly loud, but I would be more concerned about the fumes and my family!!

Good Luck