Don't really know much about kilning or fermenting cigar leaf because I haven't done it, but here's my two cents on CV versus the "traditional" cigar filler from WLT: it's my understanding that CV tobaccos spend more time fermenting in the pilones, to the tune of a couple of months more.
Having tasted a couple CV tobaccos from WLT against their "traditional" types from WLT, I find the CV types tend to be fuller, stronger and more flavorful than their "regular" counterparts. Seems counterintuitive, but that's what my palate tells me.
Some are on the milder end towards the "regular" like the CV Rene (a great tobacco) , and some are definitely more full and stronger compared to the traditional, like the CV Corojo.
I'd go for the T-13. By all means, try the CV Criollo Ligero too, or maybe ask for a sample with an order. Think you'll find something that'll work, and I'm sure others with more knowledge will weigh in