Unlike Fanny he doesn't have a back up flat in London. It would be unwise for him to stretch as much as he can.He's doing a Fanny, it will never be finished, he invests in spruce joists not oak beams. He will milk this, skimming a little off the top for supplies, pocketing the rest (as she does), till it dies a natural death, and he'll skip off into the sunset with the spoils....
This month will be the first month he will make bank between 15 to 25k. Patreon + yt flogs.
Next month he could hire 2 qualified builders to help him. The more progress his viewers see, the more they get invested in 'finishing it'