You could always just ignore the 185kts restriction if it's not with the intention of limiting your turn radius due to terrain. Also the overweight landing checklist I believe doesn't necessarily consider the fact you're single engine. The single engine go around climb gradient tables in the performance manual only include conf 2 or 3 anyway so who knows what climb gradient you will achieve single engine with conf 1+f. Happy to be corrected on that though if someone knows differently.