oh i don't know, you just know. if you don't feel safe enough to travel alone to go visit, think it over, talk it over with him.--at least that's what i'd do. There's no answer to either questions, it's not like 'after 6 months you can meet and all will go great, but before that it won't.' that's nonsense; you could be talking for a month and feel that click, that connection.
but my advise would be if you have to ask yourself whether you're ready and even a part of you says 'no' then wait a bit.
http://www.bdsmlibrary.com/forums/sh...ad.php?t=16150 amongst other threads might also be of interest to you