As for not feeling safe with 39bhp - thats just ridiculous, sorry!
Erm, why?
300cc and a whole 39bhp?
Its a wonder I ever managed to survive my teens.
17- TDR 250 50bhp
18 - CBR 1000f 100bhp
19- as above plus an RD350
I don't think I would safe on the road with only 39bhp on tap.
The Ninja 300 has a power to weight ratio of ~224bhp/tonne and it good for over 110mph. If you can't manage to stay out of trouble with that then you might need to look at your riding style.
RD350 was around 40bhp, at least stock.
As for not feeling safe with 39bhp - thats just ridiculous, sorry!
Sarcasm obviously not your strong point.
Common sense obviously isn't yours.
It's very difficult to convey things like sarcasm when dialoguing on the internet, especially when no attempt is made to highlight it such as in your circumstance.