for ch.3, i think sririta...she was in the industry before 2007 and all, but she really got launched by her lakorns with rome, and so, i think she'll be rising this year...
for ch.7, i think pancake (even though i'm not a fan of hers), because she was really popular, and got a lot of votes, etc. in 2007, while her lakorns received high ratings...additionally, she has a lakorn with oil in 2008, which is sure to draw viewers, so yep, pancake's also going to get a lot of attention this year. i hesitate to say kwan (even though i'm a fan of hers) because, in my opinion, kwan already had her year where the producers tried to promote her non-stop, and when she had 4 or 5 lakorns airing, one after the other...and her workload was minimal in 2007, so i don't think 2008 will be her year...