How Much Work is this: Converter

You do NOT need to replace the converter. READ THE SHOP MANUAL. I've posted this zkilliun times. Go to MyMopar and download a FREE factory shop manual

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Draining........get your pan under and remove all but a couple of bolts in one corner, then gingerly back them out to "tilt" the pan on the remaining bolt(s)

You can order "add on" drain pan plug kits from Summit they are not much money
If the ring gear has one or more broken teeth on it, yes, for dependability the converter or the ring should be replaced in my experience. I know that it isn't a must do situation, but what happens if more teeth are broken off? Stranded one night in the middle of no where?