Cfrench: I guess the simplest way to include Honduras in your trip is to do SJO-TGU-GUA rather than SJO-SAL-GUA. Alternatively, do a short hop and back from SAL. Can't remember exactly the cost of the tickets (I did the central American bit of my trip back in March and looked at TGU as a potential stop in the planning stage, but my memory is fading by now), but I remember them being quite cheap.

Schutzee: I'll be doing the UIO,GYE,CUZ segments from Thurs to Sat next week.

Rhinochaser: whereas your suggestion is attractive, I feel somewhat reluctant to go somewhere with too much of a homely feel when I'll be basically going to bed to getting up the next morning at 3.30/4.00am. Something more hotel-like might be more suitable for me. Thanks for the suggestion anyway, as well as those of other posters.