based on what I know of training schedules (well, having developed my own IM training- but that's different, I know), maybe make the peak bike week the week after the peak run week so you're recovering from the run and can put that much extra into the bike. Then maybe make that next week a little step back week from both.
IDK... I might be totally off here. Your race schedule looks great, tho. Good luck with your goals for next year. LOVE that you have a solid marathon training plan with only 3 days a week!