In a quandary about EGR cooler

[Mrkentee]

I’m replacing my turbo. My EGR cooler has over 700k on it, and does not leak. I thought this would be a good time to seal the exhaust ports off, either by welding it closed, or using freeze plugs (I’ve heard it’s feasible).
In reality, I don’t want to mess with it, and all the lines, and fittings, and o-rings, etc.
what should I do???

Also, is there a kit with all the o-rings and gaskets in it, so as not to have to order them all individually??