How do I construct a 3-betting range?

Lets assume Villain is to my right w/ stats something like 40/20/3 ranges like.
EDIT: Ignore the red.

Villain limps 20% of the time
{ K9s-K2s,Q9s,J9s,T8s+,97s+,86s+,75s+,64s+,53s+,A9o-A5o,J9o,T8o+,97o+,86o+,76o,65o,54o }

Villain bet/calls a 3-bet 17% of the time:
{ JJ-22,AQs-A2s,KTs+,QTs+,JTs,AQo-ATo,KTo+,QTo+,JTo }

Villain bet/4-bets 3% of the time
{ QQ+,AKs,AKo }

When Villain bet/calls, he will either donk or c/r the flop a huge percentage of the time.

I've been thinking about this for days and the best I can come up with as my calling-a-raise range is 16%
{ TT-22,ATs-A2s,KJs-KTs,QTs+,JTs,98s,87s,76s,65s,54s,AQo-ATo,KQo,QJo,JTo,98o }

So my 3-betting for value range is 4%
{ JJ+,AJs+,KQs,AKo }

And my stack-it-off pre range is 2%
{ KK+,AKs,AKo }

But this just seems way too thin, even for a nit like me.

What am I missing here when I try to work this out?