Hey there! This is actually a question I can answer, so I’ll tackle it!
Someone already made a scenario to run squadron dungeons and then repair.
Amzo’s very helpful scenario can be found there and it also turns in anything in your inventory that can be turned in for GC credits! There is an option in FFXIV’s many menus that will dump all new gear into your bag so you can fire and it will loop doing dungeons and repairing/turning in the gear for more credits to fuel dungeons!
In the future you’ll probably have better luck in the Grids and Presets forum asking for scenarios, and don’t forget to check out the Scenario Index to find a bunch of useful Scenarios others have put together and shared.