Posting your Battlelog profile name would make the process faster if you really want to play with someone. I have no problem adding anyone in friends, but keep in mind that players from US would not play on european servers and vice versa (well, at least sane players).
Are the console servers separate from the PC ones are am I already playing against people on consoles?
Yes, every platform has it's own servers, otherwise console peasants would be always raped by PC gods with actual controllers instead of that vibrating dildos aka gamepads.