Userpoints Monthly

Hi,

I am hoping someone with user points experience could tell me if I am able to do this...

I want my users to write blogs etc and get points to donate to one of three charities. They will select the percentages (on their profile) and at the end of each month their total monthly points will be divided as they wished between the charities. Every users points for each charity will be added together and we will then take those points and work out what money goes where (advertising revenue/total points = point value).

Is this possible? Can I have a running total of points and also a monthly points level which is reset each month (kept historically for at least one month)?

Thanks,
Paul.