I understand, I only asked if it makes sense to start play nash until i get some reads(although some reads are there almost always) and lets say after 5 hands play my own push/fold ranges. But I think its not a problem, for good application of Nash ranges its only needed to play only push/fold by nash charts without any deviation and theres no restriction to play nash to the finish once I started play by him. The only thing that can happen when I deviate from nash and start pushing my own range based on reads is I will losing money cause of bad perceiving of opponents calling range, If I build correct exploitative ranges, I will win more than by nash. But by nash its too possible make money but its probably far less than by construct range based on opponent´s reads, but sometimes it´s maybe better play nash if we cant decode opponent´s calling range(although its unlikely), because we certainly will be at least EV0 under 8BBs deep (I read higher is nash EV-, cause of unaccurate calculations of nash ranges, not cause of flaw of theory).