Q4 peak fees — what should I add to CM so I don’t get blindsided?

FBA, small standard-size (Toys/Home), ASP ~$22, CM ~28%.

For Q4 I’m baking in: per-unit peak fulfillment surcharge, higher Oct–Dec storage (0.11 cu ft/unit, ~40 DOH), low-inventory-level fee risk, inbound placement, higher returns/removals, PPC CPC bump, and coupons/deals clip fees.

What else should I include? Do you raise price/ROI to offset, and is there a simple per-unit “Q4 pad” or template you recommend?

Stressed about peak this year, and appreciate any advice