If you have a high level pet with fast respawn or high heal, you could probably solo Raton 2. I tried it myself and managed to cut 3/4 of Raton's health (the solo buff from Alta Colette is awesome!), but since my pet is just Lv9 respawn times and heals were low. Damn Mq timed out TAT.
Another tip, there's this high level player hanging out there at S1, named BigBos. I ended up not soloing Raton 2 coz I also have my pt partner to think of, so we bought his services to help us kick some Raton butt.