As LaPlace Transform already said down below, it's possible to exchange Quest points for CB at the counter in Nodrya's letter association. Quests usually also give CB and I believe there should be a cheat for CB gain in the technical cheats menu! However, I'm also thinking about adding a "jobbing" system to the game, so that you can earn CB by working, but this'll still take a bit.
That sounds like a good idea! I followed the instructions and now have enough CB for the mansion, so I'm doing good for now, but I seem to keep running into a bug when I try to add the rich guy (the one who challenges you to have more money than him) to my group. After I get enough CB and manage to make him part of the group, I press the menu button and it shows the loading screen over the page I was on. I think it then crashes. It could also be because of my slow computer though
I've just updated the game with a few bug fixes, you should be able to open the menu without it freezing when you have Eduard with you now! Just download the new update and here's how to transfer your save file to the new version:
Go to the "www" folder included in the game folder. In the "www" folder should be another folder called "save".
Now just copy that folder and paste it into the "www" folder of the updated version.