The simple answer is yes to both, however in order for your questions to be answered here on this forum, you'll need to provide a little more information.
Do your projects have parent records? Not too clear on where these combines fields are coming from in order to then use that when creating projects from the parent record. But I believe you can add that to a custom URL button that will populate that info in the Project record when it's created.
When you say "number our projects", are you thinking sequential numbering? If so, the projects should be a child to a parent so you can roll up the number of projects already created, and then bring that number back down to the child record (project) as a look up, so you could then add 1.
Here is a previous post on this: https://community.quickbase.com/discussions/quickbase-discussions/creating-a-unique-identifier/40285