As a senior hustler myself (in the hard working, making deals way) I would suggest that they look at just hiring a part time bookkeeper and an office assistant. It would cost less, not dilute equity, and they wouldn't have a hustler doing bookkeeping. As someone who has had to fix bad bookkeeping, I can assure you it is something you want to avoid. You could think of bad bookkeeping like bad code - it can be 10x the work to fix it as it was to do in the first place. But with bookkeeping you usually can't just pull it off github and rewrite it. You have to fix live systems that change everyday.