If you have the money investing in a nut making kit from stew mac would be my suggestion.
It is very hard to ruin a guitar when changing a nut, however, it is very easy to RUIN THE NUT when filing it. If you can invest in the tools, and a dozen or so nut blanks then I would say go for it.
Learning to make nuts is a valuable skill and also extremely fun once you get the hang of it. I ordered the kit and ruined a bunch of nuts but once I got the hang of it making a new nut is a cake walk and it earns me a couple bucks here and there from friends and friends-of-friends who need a new nut but don't want to spend a lot at a shop.
Your choice