Personally I wouldn't bother with Parallels or boot camp, unless there is CAD software that will ONLY run on Windows, but it doesn't sound like the case. MS Office, including OneNote, is available for Mac without need to install Windows. I try to avoid anything Microsoft...
I wish Solidworks was available for Mac, but it's not. And being pretty much industry standard for small engineering firms (the other big CAD players aren't really compatible either) it's a bit of a pain.
Though I do use a mac alternative in (OnShape) for personal work, but I do have to keep a Windows machine around for using Solidworks when OnShape isn't capable.
But, I will not put parallels, or boot camp on my Mac machines. I hate the bloat, which is one of the things that brought me to mac a long time ago. I'd rather keep a cheap laptop knocking around for the times I use it every other month at most.