Thanks, everybody, for trying, but not not much help. I've done tons of research, but was hoping my fellow ACA folks could be more specific/aggressive in their advice.
So, sigh, I'll go to trial and error.
OK then, so here is my "more specific/aggressive advice"... Unless you have specific requirements or preferences for using one forget the trailer. Far more people tour with panniers many are heavier than you and carry fairly heavy loads.
There is nothing about your weight that makes a trailer an especially good option unless there are particular reasons that you prefer a trailer. People tour on tandem bikes and there are not many tandem teams that don't weigh more than you. So I advise packing reasonably light and using panniers. If you are a minimalist ultralight packer, then even the panniers could possibly be overkill.
Consider the need to ship or fly with your trailer to and from your tour start or finish. For me that is a fiarly significant reason not to use one.
OTOH, there actually are a few special reasons why you might go to a trailer... Travelling with a lot of heavy and or bulky gear. Riding a very lightly built bike with more load than you want to carry on it. Riding a mountain bike and wanting to be able to unhook the load quickly to go trail riding unladen.
Bottom line most folks use panniers and are better off for it.