I did that for one neighbour in one apartment complex where we lived. Her laptop sucked ass beforehand.

It really comes down to apps.

The only flag you mentioned that caught my attention was Word and Word templates. I’ve not tried Word templates.

I figure your options are either Libre Office or something cloud based, eg, Google Docs.

One thing you could try is to set up a VM or boot a live CD (USB) and try on the things that most concern you.