Update on the sharing. I have been storing all of my Excel documents on DropBox. I just discovered that if I share them on OneDrive instead that I can simultaneously edit with my employees. So instead of converting all of my existing Excel documents to Sheets or Numbers documents I'm just going to move everything from DropBox over to OneDrive. This pretty much seals the deal for me. I'll be sticking with Excel due to familiarity and not having to convert documents to a different platform. Now I just need to find a keyboard that I like.