It would for sure be a lot better than getting into Boston!!!
You can't go 495 the whole way to Providence? The best way for sure would be 495 to 95 South. For the most part you generally won't hit too much traffic until you hit Pawtucket area in am....and even that is nothing like what you are used to. You might on occasion hit some traffic at the 295 split in Attleboro, but as long as you get in the left lanes you should be able to avoid most of that.
I had a friend who was commuting from Marlborough to Cumberland and it took her about 45 minutes on average. You would probably be looking at closer to an hour commute.
At 7am you wouldn't hit any traffic, it is for sure heavier between 8-8:30.