We could say Taro's own mental well being is already shaky, at best. Maybe that's why he was a good enough target to convince to help Kabuto? If we don't go into depth about the motive or experiments (to have been done at least) themselves, it probably won't be a huge deal. Not every evil plan has to be A+ work hahaha, it would be a bit funny if this just fell apart for Taro after his/Kabuto's goons are disposed of. 

I'm doing a great YYH RP off-site...it took so much will power not give Botan a spirit gun. But you gotta love the classics man!