No problem man, hope you're enjoying the game!

No, the money for story continuation missions must be acquired during the run itself.

This is allowed, but you cannot complete graffiti missions to regain money, only hobo goals. You must also have the exact amount of money that you normally start with.

I'll be working on a comparison video over the next few days/weeks to compare anything in the NTSC U KARARAT run to the JP. This includes zipping(spindashing), the Magma boost, loading times, JP specific tricks, and other things. If you have any suggestions for comparisons, feel free to let me know.