As far as pipe tobacco blending goes, Virginia is in just about everything. VA and Latakia, as well as a few others are staples in pipe tobacco blending. Except for the drugstore stuff that is.
Actual Cyprian Latakia is smooth and smoky, kind of like the small of a campfire if you like the stuff. People who don't like it say it smells like burning electrical tape or camel dung. The latter being based on a myth about how it's made. If your Latakia has a spicier undertone, then they were mimicking Syrian Latakia.
It should also play well with your Oriental/Turkish flavors, Desert Ship and Cowboy. I know the flavors are not going to actually match the actual stuff burning in a briar bowl, so even with the top secret recipies that mortals can never see... You should be able to experiment a but with those four. Though that "perfume" taste kinda baffles me in those particular ones.
If you can grab some Perique flavoring, that will go great with the VA, either alone or with Latakia.
Sorry I can't be more informative here, but even though I have done oodles of pipe tobacco reviews, I was always describing the tastes to people who already knew what the constituent tobaccos tasted like. To try to describe proportions of flavor without a frame of reference is about impossible.
See if you can get up with Vapenstein on here. I know he does tobacco juices and is a pipe smoker and is familiar with the English blends. Since he has experience on both sides of the fence, he may have posted some info you can use.
Already on DIY 
