meixans are great man… Each region/State in mexico has slightly differnt sativas, Simialir to how African sativas vary from region to region… …Before dutch genes hit my area, all we had were sativas beans from bricks and sacks: mexicans, central americans, columbians… later it vietnamese and then it was afghans, which was huge step. adding indicas to the local sativas produced some amazing results. then i got nevils genes and it was game-on from that point. I love mexicans, and I still have mexi plants, crosses and mexi genes in my library to this day.
idk how the Mexican pools are are today, i know shit changed like crazy after NL, WW and Sk were introduced into mexico and thier pools in the mid-90’s. Mexi bag used to somewhat variable, but it was always easy to find a standout. The meixcans i used always made kick-ass hybrids when outcrossed to indicas. I still run and still have many of my meixcan crosses… my fav is still my (NL#1/Mex)…
Have u grown the mexi clones? and have u grown the lemon kush?
By crossiing a pure mex with anything, you’ll get nice hybrids… just outcrossing any IBL pool, with something un-related will get some hybrid vigour… but how much vigor and how well they perform, will depend on yur Lemon Kush. IDK about the genetic integrity of modern day American polys…
Im sure the f1 wil be nice, and if u want to see what the integrity of the cross is, simply go to F2… that gen will show you eveyrthing u want to know about yur cross… 30-60 seedlings in f2 will show u enough…
My advice is like @ray said, pollenate that shit man! dust some lower buds, (so u will have the tops as sinse to smoke) and plant yurself as many beans as u can (depending on how big yur sativa clones are, just a few lower buds can give u hundreds of seeds man)… grow them out, clone them, flower the clones, and keep the standout mother. obviously the more u beans u plant, the more choices u will have… but it is for sure a cross worth doing and investigating and playing with…