Thanks. I like the first option as well. Hopefully, once I've completed the sheet it won't need any updates but you never know
I've not used GitHub before so I might have to pick your brains on that when the time comes if that's OK? Don't mean to be a pain as you have been very helpful.
BTW, if there is anyone else reading this thread, I'm open to feedback on the sheet as it stands (with the understanding that it isn't complete yet so some items might be on my "to do" list already).
Thanks again.