I had two main goals here.  First, deconstruct the small input into atom pairs as quickly and compactly as possible (pairs make disposal queueing easier).  Second, handle disposal with only 5 arms, each working twice per 10-loop.

I achieved both goals! In only 2 cycles and 25A, this machine renders the input down to 4+2+2+2+1. It also reuses one of the initial deconstruction debonders as a disposal queue, which helped take this idea from 68 area down to 59.

But there is one problem I couldn't overcome--the huge swing of the 4-atom fragment.  Because of that weakness, I think that a better puzzler could possibly implement the same strategy in as little as ~55 area.