No this is not Hurley's dream. There are to many things that Hurley had no part of, that are major parts of the story line. There are to many to name them all but, A few examples are Clarie's experiance while she was held by Dharma, Sayid's time with Danelle, the whole raft Dharma incounter. And all the fashbacks that don't involve him.
Hurley said it many times he is scared of change. He feels change is bad. He also feels like he causes bad things to happen. He Won the lottery and veiwed it as bad. He's buddy Dave was triggered by, an attempt to make changs for the better. that where instantly fouled up buy the food drop, as well as the fact that somewhere deep in the back of his mind he knows where he has seen Libby before and, that is a link to a time when Dave was part of his life.
I wonder if the was still on his meds when he took his trip on flight 815?

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Hope is a very dangerous thing to lose. - Sayid

I do what my Rice Krispies tell me to. - Anonymous