I dunno, if my boss came to me and said "Sorry, but I don't have enough money to pay your full wages this week. I can either pay you 95% of your wage now and the rest when we get more money next week, or I can pay you nothing now and all of it next week."
If I have a family to feed, I know which I'd take.
Presuming you can be confident that the boss, who has already failed to deliver on his promises can actually manage to deliver at all. Otherwise you would probably be looking for new employment.