1. When Hidan and Kakuzu entered Kumo why did they only stop at the 2 tails? Wouldn't it have been easier to attempt taking Bee as well? Maybe after the ritual but doesn't make sense for them to leave Kumo after with another Jinch right there..
2. What country has the most Jinch's? Kumo's 2?
1. Well from what we saw, Akatsuki collected the tailed beasts in order, Gaara first, then Hidan and Kakuzu taking Yugito, then the wild Three Tails that Deidara and Tobi got, then Kisame took on Roushi. So we can only assume they had a reason for doing it that way. The only weird part is how Itachi and Kisame tried to capture Naruto in Part I (now we know that was an excuse to check up on Sasuke and all that, but still it seems weird, surely Kisame would've thought 'why are we doing the 9 tails first' if there was a reason they were supposed to go in order... maybe Kishi changed his mind on all that for Part II).
2. The Stone village also had two - Han and Roushi. And so did the Mist - Yagura and Utakata, but the latter became a missing-nin. So I'm guessing that Hashirama decided to give 2 tailed beasts to each of the large ninja villages, keep the strongest for his own village, and then gave one each to the smaller villages (I'm just assuming the Sand was smaller or maybe younger than the other villages back then, which would explain only giving them the One Tail (purely guesswork as far as I know), and then the final one went to Waterfall, a known smaller village).