One issue I'm realizing will be a constant of the screenwriting profession (or any writing profession, probably) is that you have to decide between which sorts of projects to pursue -- on top of the ones you need to focus on that are paying your bills.
There are the extension types of projects. Like writing a series document for a pilot, when in theory all you need is the pilot... but it may or may not help with the pitch. Or there's the feature screenplay with renewed interest from the producer, is it worth the free rewrite if you think it'll get something real to happen? Or there's the more basic recurring question: what's the best sort of wholly new and original project for me to write? Screenplay or pilot? Or something else entirely? There's the idea itself and what medium it lends itself best to, and there's the commercial question. All of these come back to the horrible speculative bet of what you think will actually get made, get eyes on it. It's good to be fully aware of this question as you think about every potential project. But perhaps it's just the one you're most excited about, can passionately (and quickly) write the best.