Different "take the train, you rube" suggestion: park at the Wonderland Garage in Revere and take the Blue Line downtown to State.

The Red and Orange Lines are kind of messy but the Blue Line is clean, reliable, and efficient. And Wonderland is just off of Route 1 where you'll be driving from. The last 5-10 miles into the city can be the most brutal, so this plan lets you avoid it while taking the most reliable train line.