Please note that while this is a very smart form, it's not perfect. It may let you do things that the rules say you can't, let you have too many points, or let you pick the wrong kind of Stuff. Hopefully, any errors are few and far between, but Stuff happens, so remember to look it over and make sure everything looks right before charging off with the end result.
That said, go ahead and experiment! Fill it all in by hand, or hit Randomize Everything and go for broke!