"Reinert, I'm not so certain I want to begin the life of a brigand. If I'm captured or arrested, my family's secret will be revealed. Also, we have no way of knowing how tough the guards are." (OOCmeta: surely the DM wouldn't make guards be tougher than we could handle, right? Maybe, but Kaltide is quite worried anyway.) "Also, we have no way of knowing if the caravaneers are innocents or comrads of Richard. If they're innocents, we would be putting their lives in danger. If they're comrads, perhaps more necromancers, we'll be in over our heads.
"I'm leaning towards ignoring the caravan completely, and heading straight to Serwil. If we have money, let's hire a fast ship or some fast horses to increase our lead time. Maybe we can eliminate this elf Erantur before Richard gets a chance to meet him, and lay our trap for a time when Richard will be alone."