What would be a good bike for me?

I m 15, about 5 6-ish and 125lbs, so not very big. I m wondering what kind of bike I should get, I want something with good speed and for it to be comfortable. I m just starting out, so nothing insanely fast. My dad has a 99 ZX-11 which I like very much but it s far too much bike for me to start on. I can lift it off the kickstand fairly easily but I m not really comfortable in doing so as it has a heavy weight of 600 ish lbs. What should I start on? I m in to any types of bikes, Honda CB series, Ninja 250 s, Ducati Scramblers, etc. Recommend me something.

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