I noticed that you didn't cut a port hole in the kick drum reso head. Did you consider doing that for mic'ing purposes (e.g. more volume on the outdoor steel pan gig)?
No - but only because this bass drum was built for jazz gigs, and I wouldn't normally use it for an outdoor, unmic'd gig like this. For jazz work, I don't want a ported head, and for one gig, I didn't want to sacrifice a head. If I wanted to use this drum on a regular basis for these sorts of gigs, however, I'd keep a spare ported reso head on hand, to allow easy access for a microphone. (Through a sound system, or even unmic'd but indoors, this drum would've sounded fine. The sound of the drum is great - volume is the issue.)
I knew going in that I was stretching the capabilities of this bass drum, given the context. (Had we been indoors, or if the drums were mic'd, it would've worked out much better - this drum sounds surprisingly good at a lower tuning.) Besides, I'm not convinced that a port hole would've made much of a difference, unless it was huge - this drum just doesn't move that much air, given its size.
(Some of it might have been my drummer's BD pedal, too. He brought his Axis pedal, and I didn't notice what kind of beater he has on it.)
As you can guess, that's why the 20" BD is on the drawing board - for gigs exactly like this one, to make the kit more versatile. Bop gig? Tune the toms up, grab the 18" BD. Caribbean or funk gig? Tune the drums down (to taste), grab the 20. I also consciously chose a BD tom mount that will accept a 1" post, so if push comes to shove, I could even use my 22" Ludwig bass drum with these toms - the tom mount will fit the 22 as well. I love the idea of being able to mix and match different components to assemble a kit suited to a given situation.
With the bass drums, I'm planning on doing some experimentation with bass drum muffling and tuning techniques, with these different drums. What I'm planning to do is to have several different bass drums available, each with its own muffling/tuning setup. What I've got pencilled in at the moment is:
18" BD: wide-open (except for a felt strip or two)
20" BD: pre-muffled heads (EMAD or SuperKick/Regulator combo), ported reso, suitable for mic'ing, but maximizing the amount of air inside the drum by eschewing the use of a blanket or pillow
22" BD: ported reso, non-muffled batter, with a small Evans pillow inside, for more of a "thump"
I can get a variety of tom sounds with some quick tuning changes - plus, I still have the toms for my Ludwig kit. Combine that with a change of snare drum and bass drum, and I can quickly redefine the sound of the entire kit as needed.
I may even build a little 15" or 16" bass drum as well, or maybe a shallow 20, so I can use one or two of these toms in a microkit configuration.