Please, take all the time you need! Looking back at this community's general preferences on game updates, it seems many of us prefer some good solid work that takes a long time to put out, compared to mediocre ones released on a set schedule. We want some chucky updates! Of course, length doesn't directly translate to a better experience, but with what I've seen so far, I'm confident that what you can create will be stellar, so longer content is perfectly okay in my book.
It also seems that you feel a little guilty for not being able to perform on superhuman levels. What you've created is amazing! I think you've just been blinded to what great work you've already created. While it's amazing that you're so ambitious to show us what you can do, I think being proud of what you've worked so hard on already with this project will help you recognize that your audience isn't disappointed, or being let down.
We're so grateful for you sharing this story with us, and I can't wait to see the next chapter. But please don't feel bad for making us wait, we can be patient :)
Cheers