Are you sure you want Mac? We all know that their products are good but if you want to get their products I would spend a few more dollars and get even better products. I love Mac but I know I can get way more out of my money with other brands.
If it is Mac that you would like to get, I suggest Studio Fix Fluid foundation, its matte and light, build able coverage.
For concealer they have a few different kinds, There is a liquid concealer which is great but the cream concealer is going to cover more. If you have skin that is going to get dry throughout the day I wouldn’t recommend the cream because it can come off as flaky. Otherwise for coverage its better.
Mac fix+ is multi use so its honestly a staple for me. You can use it before makeup, after makeup, for eyeshadows, anything you want.