Brother I am here to tell you that what you want to do is no walk in the park, but with lots of time in the ol' edit window you'll be able to do this easily.
You need to group the tracks you want to duplicate together. The easiest way to do this is from the mix window. If you look at the top of your fader you should select the faders you want to group together with the square button. It will light up when you click it. Again do this to all of the tracks you will be working with.
Move down to the bottom left hand corner and click group (or something like that). Anyway you are going to add this as a new track group
Sorry it's a little difficult to explain because I am not in front of my rig. moving along....
Now that you have your tracks highlighted you can now edit one track and it will apply to all the tracks in the group.
Copy the section that you want. Get it as close as possible by zooming in and then paste onto a blank section.
You could also click file / copy selected tracks and then use your new tracks to chop up and edit.
When you have the tracks you want to paste then you are ready. Grab the hand tool thing and select the track you are pasting to. The end of that track should be indicated either in a nudge pop up window or in your transport window. Write this number/time down.
Now click your pasted track. A window should pop up for nudging. type the end time of the previous track in for the start time of the new track.
well anyway, understand?
I am not a pro tools expert but this is how I would handle it. It might not be any less tedious than what you were expecting but after you are comfortable with these edits you will be much faster at it.
I hope this helps
Good Luck!