Hi! I'm just full of questions...lol. How many probes do I send out in order to obtain fleet/defense information? I have lvl 4 esp, do I need to go higher?

Depending on your opponent, you can send out a single probe or may need 15 of them. Regardless of your ESP level, sending an ever increasing number of probes will tell your target's specs. However, to save yourself some grief in constantly building new probes, aim for Level 10 and plan on sending 5 probes for each ESP mission.

Thanks slash. I'm trying to up my esp lvls, but damn it uses a lot of crystal! Is there a way I can change my storage amount on the cargo ship so that I bring back nothing but crystal?

Not really.

Didn't think so. I'm starting to build large cargos now, so that should help. Thanks for the help!