questions before buying

Hi, i’m really sorry if this is not the place to post theses questions, but can’t find any place on your site to ask a question before purchasing.

So here it is : I’m working for a big french youtuber, and we’re lookign for a solution that can do this :

– Work with only one charity organism

– possibility to have a donation % option on the checkout, calcultated on your purchases

– possibility to have a widget to show on homepage how many euros have been collected so far for this charity

Does theses 3 things are possible with give WP ? If so, with wich payment plan.

Thx a lot for your help, and once again… sorry if it’s not meant to be here.