LLT

Hello Guys-- I'm preparing to order a 2012 F350 CC and was wondering if I could pick your brains for advice. We will be pulling a 41' 5th wheel, GVW is 15,600. I would strongly prefer a SRW, but everything I've been told indicates a DRW is better suited for this application. When we're not pulling the RV, it will be used almost daily just for general use, errands, highway use, etc. With that in mind, I would like it to be comfortable when not towing (most of the time) but have the capacity to do the job when needed. There's so many options, it's blowing my mind. Since I'm factory ordering, I have the opportunity to do it right, but don't know what right is. Heavy duty suspension upgrade? "Camper package?" Axle ratio? Two alternators vs standard vs HD? Any help/insight would be much appreciated. Thanks guys!