Do you really have to pick and choose..? Well, surely do it and produce some lovely singular images, but your contact sheet looks very beautiful to me, with all the variations and repetitions... Maybe they need to be arranged tidier with equal spaces between them (but this is just my obscession, and they surely may not need also), and the work in total should be larger... ...But, it would have been an exciting experience to see such a "forest in pieces" work printed in large format (maybe exaggeration, but I'm thinking of a format with at least 1.5 m in hight) and hung up on an exhibition wall... :)