how long is the drive from your house to the station? If you drive to parra you could take the express train which would get to central in about 30 minutes, and if you get at the right time there'll be plenty buses to take you to unsw quickly. I catch a train from Blacktown to unsw 3 days a week, it's pretty annoying but I'm living with it. (too poor to do anything else i spos)
I think if you combine comm and arts you'll go to uni ~4days/week which shouldnt be too hard.
I'd much prefer having my lectures starting at 11am at the earliest, but that's just because I suck at getting up early. I don't have breakfast on most days, just get dressed and leave. Anyway, you should be able to choose your own lecture times so you can decide. You should try to have 3 longish days instead of 5 short days (more cost effective). I dont know anything about arts but 1st year comm lectures usually start from 11 to 1 and there's usually a few streams for you to choose.
Or you can go to usyd.