Looking for as many people's opinions as possible. About YouTube and things like that?

So I'm taking a computer course in college. If your interested it called computer systems technology. I have to buy a decent computer. (I7 processor, 16GB of ram, ect) something I wanted to try is YouTube or twitch. I'm not sure on what I should use for my name. What I have so far for names are QueenMogar or just my name (Holly Denstedt). I play a lot of games anything to GTA, call of duty, Minecraft, league of legends and games on steam, I would also like to try games for consoles and even handheld games. I really need help thinking of ideas for my channel such as artwork, other things I should include in the channel like vlogs. The only issue that I have is that my voice is a little weird it's a little deeper than a Normal girls voice and I don't want people making fun of me for it. Any idea is a big help.