This black sativa could easily flower for 20-24 weeks. Probably more depending on overall environment (temps/humidity/substrate/etc.).
I would recommend these for outdoors (a good number of you should know that taming sativas indoors is quite a ride, although it is an opportunity to learn and try different things).
People are all for the sinsemilla, but if waiting that long and having an interesting male, I´d probably chuck some pollen on lower buds. It could make an interesting pair with something with a shorter flowering time, or a crazy sativa mix.
Right now I´m enjoying foreign genetics and won´t be growing these soon (I have my own sativa monsters growing, although filtered through breeders), but this is certainly something I would try and keep once I get a greenhouse or outdoor plot. Colombia has made huge strides towards legalization, even for export of concentrates (a load of regulation involved, of course, but still within the realm of possibility). Not that I would go into the business side of this dear hobby of mine, but it is nice to see progress happening.
The cripa, as I mentioned earlier, is not at all a landrace, heirloom or misterious strain. Cripa is a buzzword for weed grown with modern-ish techniques, and deemed of good quality as per the local standards. If I had to guess regarding genetics, I would say there should be some Afghani white, probably via the Netherlands, and what Colombian genetics are there should come from Corinto. This type of dope came about in the last 15-20 years.