Well, I forgot what I had said about these houses, I had thought I had responded on this forum saying I was confident for you to move. SO, sorry mods I thought I had sent the feedback on here as I was meant too!
EITHER WAY,
You're ready to move onto being full builder when you month is up. You've improved exponentially and listened very well. When your month is up, request a mod move remove your [N] and allow you to select a plot to work on. Before moving onto bigger projects it is required to do a hamlet or a holdfast. I always push to not follow in my steps and slow down before moving onto big projects. Don't do as I did and hop in immediately. Once you commit yourself to a bigger project it tears your gut out, rips your soul in half and will consume your waking being until it is over. When that project is over, you will look at it and cry every time you fly by and have the desire to nuke it. You will reapply to redo it a year or two later and maintain the same regret when it's over again. Some projects will never be complete, they will take more time to make than a film, and the tunnel will seem dark no speckle of light. Harvest Hall, Hawthorne, Fairmarket, Wickeden... Ask these builders and they will tell you their sorrows.
... TL;DR Big projects aren't as cool as they seem, they're hard work commit when you think you're absolutely ready to do so.