Replying to Boot sizing, pls help!!

hi guys! i used to ride on tecnica diablo flames 90 flex, 100mm last, 26.5 mondo and 304 BSL, and i wanted to buy dalbello krypton's pro, but the boot is not available in my area.. so i might have to buy it from the web not able to try it first. :-( so the question is if u know about the sizing comparing the tecnicas and krypton. the kryptons have 306 BSL at 26 / 26.5 mondo comparing to 304 BSL at 26/26.5 to diablo's and pro's has 98mm last comparing to 100mm last of diablos.. thx!