You'll come out to each of the LIs at an appropriate time, if you have enough affection to start on their path in October. (In Carlos' case, it'll be more that Adam accidentally outs you when trying to help him deal with his feelings for you.)
When you come out has no impact on the routes, other than potentially reducing the amount of time you have to get close to a guy (for example, if you visit Q&A later in the game, and therefore have less time with James and Dan before October).