Orval, you are cooking both commercially and for personal use right? I would say that while I am not a fan of BBQ coming out of gas cookers, if I was cooking under the condition you are cooking, I would want the ability to go with gas at least as an option. Southern Pride smokers are a restaurant and commercial staple for a reason. I would hate to convert a Lang to gas, but, you do what you gotta do.
I am one who feels he can usually tell whether a product has been wood smoked or gas smoked, there is a difference in the nature of the flavor of the meat and in the texture as well. The same goes for for offset versus direct heat cooking. I am saying different, not better or worse. My friend Matt and Charlotte use a JR Oyler and wood only, my buddy Mike uses a Southern Pride, both are cooking excellent BBQ although Mike's has a cleaner profile, more refined smoke flavor and finer texture, Matt's is more "real BBQ" in terms of texture and a whack of smoke.
I think of the ability to control heat in terms of gas versus wood, with a gas smoker being run a lot like an oven, turn a knob, adjust the heat giving you a lot more control for a lot less effort and planning. A stickburner, especially a offset is going to have a lag, and you need to plan and adjust for that. Then again, I know very few folks reliably producing good BBQ off of a Southern Pride, so it is not all that easy.
I suspect you will find that the real solution is a cabinet smoker, I notice that guys that cater a lot like things like FEC and Spicewines, the insulated cabinets and ability to use Stokers or Gurus just makes controlling and holding heat a lot easier than any offset can be.