Climbing in Java : partner and advises

Hi!

I’am going to Indonesia (Java and Bali) next July.
I would like to climb there, however, it’s really hard to get information about the crags (spots, level, security…).
If someone has already climbed in Java and has advises, it could be very helpful! =)

I’m in contact with a local climber (« guide »).
He proposed a climbing trip (5 days) in the south of Java which looks nice. (It could be a good solution as crags looks hard to find and sometimes not well equipped…). It’s not very expensive (but still too expensive for one person) and the price is divided by the number of climbers.
So…
Are there motivated climbers to share this climbing trip in Java (next July)? =)

Best Regards
Gaelle