That would be perfect, provided Trump matches the amount!
Be watchful, tho. Hillary may call in some media chits and arrange for her-own-self to be part of this debate.
Doubtful, she has already declined Bernies invite. Plus if she would find herself in a very unfriendly environment. Both Bernie and Trump would go after her hard. But I agree her best (least bad really) move would be to eat humble pie and try and get on that stage too.
How can Hillary debate someone she’s saying is out of the race. Joining the debate would admit Sanders’ relevancy.