I have played both and here is what I'd do.
Play Milo McIver and then play a round at Pier Park (its about 10 minutes from airport). You could play Pier in an hour by yourself and it is awesome. Horning's is tougher to navigate and the baskets are not my favorite.
Have fun
Pier is about 30 from the airport. (Blue Lake is much closer to PDX -- about 12 minutes.)
It is hard to play Pier that fast unless it is raining. It gets a lot of traffic, unless the rain scares everyone away.