would you go back and visit your favourite concert that you only saw on TV or some sports event or something like that, or would you find 5 years old Hitler and throw him off the bridge or somehow prevent Nagasaki and Hiroshima etc etc
Nope, you're goodYou can take them both at the same time.
enjoy myselfif i use it to kill hitler or something, the present can turn really really different, but i don't think anything will change if i only go back to watch my favorite cartoons on the tv or something.