You should have picked up some help on bidding. You should have bid a high time line with all trips in the training window. Say 82 hours at that point. Now if you have 3 2 day off periods in that time you were scheduled for the required 11 days off. 5 before training and 6 during. You decide however to pick up a 4 day trip on 1 to 4 oct. You get 22 hours for that trip. Plus you get 4 payback days in your bank. Now you are getting 104 hours plus 4 payback days worth at least 5:15 a day later. Value of the month is now 125 hours give or take.
The fun really starts for you in Nov. Get smart on how to bid and you will kill it if you have training or shadow period spilling over!

Edit: since the pickup is voluntary not sure on the payback days for the WS. In my case the 4 day trip added was IOE so I was awarded the PB days.