Welcome to the Bike Forums.

First off, though not meaning to offend, the bikes looks to me to be entry, not mid level, but that is of little importance.

Your build plan is a good one but I would like to suggest modification...

Spend as little as possible to make the bike road worthy and then ride it. Do not go the whole nine yards, building and restoring, without first taking a test ride(ensure the bike is safe to ride). If you like the ride and the bike, then consider spending more money to complete the refurbishment/restoration build. I failed to do this on my first build and look at all the mistakes that I made on Big Green, my first vintage road bicycle.

And, as for money, you will not make a penny fixing the bike up the way you want to and then selling it. You will, however, learn a great deal about the bike and that will be invaluable for this or your next build.

Good luck with the project and keep us posted.