Major Quickbooks Help

Hi, Im trying to get quickbooks setup to track finances, and business oppurtunities. Here is the situation.

I have 2 checking accounts.
I have 1 "gambling bankroll account".

I have 10 customers.

From week to week, a customer either owes me money, or I owe him money. But no on actually pays until its convenient

So-
week 1 week2 week 3
Cust1- +200 -400 +500
Cust2- -100 +300 -333
Cust3- +400 -299 +200

The negative denotes how much tehy owe me, the + denotes how much I owe them. How would I keep track of those customers, sperately, ie enter debits and credits from week to week, but also be able to enter when they ACTUALLY pay me (from time to time?). I also need to keep track of the total balance of ALL the customers (whether its negative (I owe money, or positive, they owe me), and be able to enter outside deposits (from poker etc) into that account that is also tracking all the customers. If anyone could help I would forever be indebted.