We also use I-84 to Rt. 209. Rt. 209 takes you through the Delaware Water Gap National Recreation Area - it is a pretty drive however it is only 2 lane road, it that matters. Also be aware there is bridge reconstruction on I-84 westbound. We were eastbound about two weeks ago and traffic going west was backed up pretty good. Allow extra time there.
I'm going to suggest, if you've not already considered, that you continue on 209 south to Rt. 33 (and yes, you're on I-80 for a bit at Stroudsburg). Rt. 33 eventually terminates at I-78, then take I-78 west to Rt. 222/Hamilton Blvd. The stretch from the I-78 interchange to Breinigsville is 4 lane but there is a series of traffic lights so take your time. Rt. 222 is then 2 lanes until you get to the east side of Reading; once you're on the Reading bypass you will make good time. Enjoy & safe travels.