Parent PLUS / Double Consolidation into ICR/IBR

Hello, I completed the Parent Plus double consolidation this past July and applied for SAVE, but my application for SAVE was not processed in time. I was on forbearance/interest-free while the SAVE plan was still being processed. Now I am on a standard plan. Ultimately, I am aiming for forgiveness as the loan balance is way too high. After running the numbers, we would pay less overtime with forgiveness, even with the tax bomb at the end. Here is where I am confused. Do I apply for ICR or IBR? If I understand this correctly, a double consolidated ppl loan should qualify for IBR and it seems like the better option. However, I saw something about making a one time payment on ICR first to get into IBR? Also does it matter if I apply for IBR/ICR online vs paper regarding the parent plus loan coding or is this irrelevant after the double consolidation? Thank you in advance!!