Nick,
I do not think that the amount of oil you used was the reason why the dough was hard to handle. Rather, I think it was the combined amount of water and oil that was responsible for the dough being so sticky. If you look at the PJ clone dough formulations that I came up with, you will see that in most cases the sum of the amounts of water and oil, in percents, was close to the rated absorption value of the flour used. So, for example, if you wanted to use 5% oil with a flour with a rated absorption value of 62%, you would use a hydration value of about 57%. To use more water, then you would lower the amount of oil. Maybe that is what you had in mind. However, the PJ dough, like many American style doughs, is high in oil quantity.
The above aside, your pizza seemed to survive the measures you took and you ended up with something that looks decent.
Peter