Reusing comb from hive that died from mites

It can be reused, but if you live somewhere that the comb has not been frozen, I would freeze it in case there are wax moth or SHB eggs. If left unprotected, there will be soon. There is a possibility that there may even be tiny larvae that are difficult to spot. It is a bit early for that in my area, though.
The bees will clean out any brood in the combs especially if it is all uncapped.
Two deeps and a super is too much room for a package of bees to protect. You could start with two empty brood combs and a couple of deeps with honey. Add in new combs as needed.
Good luck with your new bees.

Alex

As AHudd mentioned as long as you don't have wax moth or hive beetles just use it as normal. You can install a package right into the existing comb and they will clean up any dead bees, dead brood, mold, mildew and repair anything needing it. They are incredible at it so I wouldn't do anything other than previously mentioned.

If you go with a package or nuc I'd pick your best frames to use in the single deep first, then as they expand offer the second box with the other frames. I also use the opportunity to cull out any bad frames or repair anything needed. You can also scrape the tops and sides of the frames to make them a little "fresher" as well.

Hopefully you have bees on order and will back up and running. You're certainly not the first or last who has lost bees to mites - but hopefully learned from in and adjusted your planned treatment schedule/type.

Thanks for the advice! Super helpful.

Mites are dead, the comb is a definate asset