Thank you guys for the posts. I cannot answer all of you but I have to say that there's no problem with the tension I'll get as I'm very used to play acoustic guitars and my fingers are already very strong. By the way, I had an acoustic guitar string of .0530 laying around (it reads 11.79 KG - 26 Lb tension) and it worked very well. That's proven that I need these heavy tension strings.
I've tried to find anything related to string tension in Dunlop's and Newtone website with no luck. In any case I ordered all the sets just to try them and see what happens.
Remember, to avoid the problem I had to go to .053 tension for E standard. If you are having the Boww issue with lower tunings, I imagine you have to go to the baritone way.