Debussy orchestration (Footsteps in the Snow)

Hi to everyone.

This week I've been working on an exercise to orchestrate Debussy's Prelude No.6 from Book 1.

I came up with two versions, one with a very restricted instrumentation, and the other with a larger ensemble.

Interested to know which you think works best?

The final bass dyad was very problematic, due to its extreme low pitch. 
It sounded too intrusive and twangy in the harp, and seemed off-pitch in the double-bass, with a horrible grating timbre.
Eventually I decided to remove the lowest note altogether in the version with restricted instrumentation, and have the upper note pizz. instead of arco.