Personal monitor mixer / headphone amp

I have been out of the electronics game for a few years minus a couple foot switches and the like, looking to get back into it with this project.

I’m wanting to build a small personal monitor mixer to use when I’m gigging. One (1) XLR input that would be my mix from the monitor console. One (1) stereo 1/8” input jack to bring in all of my sounds coming from my computer which controls all of my keyboard sounds. One (1) 1/8” stereo output jack to plug in my SHURE 215 IEM buds and hear everything. I want to have a gain / level pot for each of the two inputs to control the mix between the two and a master volume pot.

I would love input and thoughts from others on best way to achieve this and things to make sure I’m paying attention to.

Thanks in advance.