I hope you're kidding. Doing 'bigger' cave dives with unknowns is just irresponsible. There is no reason why you wouldn't do smaller dive fist to get to know someone first.Interesting, I've done 250' dives with GUE divers I've just met. I don't see why doing a 7500' dive is that big a deal.
Sometimes I get the feeling people don't take cave and deco diving seriously enough.
Doing unknown circuits, starting deco training at 30 dives, doing muti-hour cave dives with people you don't know... stuff like this seem to be OK for some people on this forum... I think it's just stupid and unnecessary. Whatever happened to building experience over years and conservative planning? I guess these day everybody what's to be a tec-deep-rebreather-cave-dpv diver within 2 years and do 3 hour dives with people they just meet on some parking lot on while on vacation in Mexico.