How much poverty are you willing to create to reduce inequality? That's the fundamental question. For me the answer is zero.
I also don't assign much value to proportionate representation. I think I'd prefer the rich to have more political power, they seem to be the least insane. Unfortunately, in our system we do have proportionate representation. The only way a rich person can influence electoral outcomes is by persuading poor and middle class people to vote for his candidate. Sadly, as Trump demonstrates, this can be done just as easily with nonsensical emotional appeals as with intellectual ones.