I just purchased the OR and am trying to figure out how to set it up. I have in my mind to put on iron flip-up sites and absolute co-witness with an EOTech XPS. I do not plan on leaving the flip up sites up while using the EoTech but want the option of using either one independently and no offset. My question is, can I fit an EoTech XPS (leaving room for a G33 or something similar) and still have room for all 3 eventually?