[X] Accept the offer, you can convince Renxiang and sponsorship from even a faction of a count house is a valuable thing.
People have been bringing up the idea that accepting this might take away a spot on the team from one of our friends like Xuan Shi or Bai Meizhan, but it's probably not going to work out like that. I wanted to get Xuan Shi invited along back when we first got given this mission, but I'm 90% sure yrsillar shot that down already. Meizhan is probably too important to come, Li Suyin is busy inventing stuff for the Sect, Su Ling and her predictions are too valuable for the Sect to part with, Shen Hu just died, Liao Zhu is in a coma, and most of the other people we're close with are stuck in the Outer Sect.
If we're headhunting from people we actually know we're pretty much limited to Ruan Shen, Bian Ya, Wang Chao, Alinnge, Hanyi's music rival, and maybe Sword Guy? And of those people the only ones I think we can both get and might actually want along are Alinnge and music rival.
Edit: not dissing Ruan Shen, but he's recovering from last mission and Bian Ya probably doesn't want him running off on an adventure like this.