I wouldn't. I love Matt Ryan but he's not an amazing fantasy quarterback - solidly in the 2nd tier along with Josh Freeman. Freeman has the added bonus of his legs which are awesome in standard leagues, plus Finley is a beast.
In my league last year, Feeman only had 7 less points than Ryan. Granted, Ryan has more weapons to work with, but Freeman is still very young and is getting better every year. Finley, if he stays healthy, is a top 5 TE. I wouldn't do it.
I have both and Freeman is my starter...U are giving up too much for Matty Ice and in the words of the numberfire forums last season "All Josh does is throw touchdowns"