Pumping at work - pump bag recommendations

Hello all, ftm here trying to get this whole pumping at work/school thing figured out. I have plenty of time before that is even an issue, but I’m a planner so....

Anyway, I got the Spectra S1 and am having a hard time figuring out what kind of bag I need since it is a bigger pump.

I’m hoping to find one that is big enough for all the pumping supplies and cooler bag, and my wallet/essential purse items, a text book, and hopefully even my lunch so I don’t have to carry multiple bags every day.

I have looked at giant tote bags, but am worried that you can’t possibly keep things organized in there for the short breaks I will have to pump...

Suggestions?

Or do I need to suck it up and get used to the notion of carrying baby, diaper bag, pump bag, and my personal items out of the house every morning?