I would hestitate to use a 16" bass drum with plastic heads. There's no bass to it. Even 18" bass drums are pretty borderline- some of the very best manage a bass drum sound but those are best employed as a kind of tom with a foot beater.
If you get into real skin heads, you will manage a much more satisfying bass tone. This might mean using a conga or some kind of hand drum- at least in the line from the lower opening, there will be some real bass tone there and a nice groovacious feel. Note the long shell- the best 18"s work by means of their cannon-like depth.
Or you could use a box drum, for the kind of tone people dream about making with their normal kit bass drums. That cuts, and has way more class and vibe than plastic.
Or you could get an old parade drum off ebay or something. I have a nice 23 1/2" x 8" marching Ludwig&Ludwig with original calf skins that I found in the back hall storage of a used drum store. Within it's limits it's quite nice. And actually marching with it has it's appeal!
A small drum kit need be nothing but two drums, an up drum (snare) and a down drum (bass drum). But for smaller spaces a snare drum might be too loud- bass drums basically never are quite loud enough, they are a chronically underpowered instrument until the size gets quite big. Still, any number of instruments can sub for a snare drum- a nice tambourine, a woodblock, a hand drum of some kind, a hi hat, clapped hands. The role can be filled any number of ways. Same for bass drum- even a stomped foot will serve, and on a wooden stage will very likely have deep powerful bass far beyond what the bass drum is capable of.
And any kind of cymbals, bells, or shakers can take the role hi hats or rides usually fill.
There's a lot of wonderful percussion instruments to put together to make an expressive small kit- I would hesitate to go with the usual plastic head drum kit in a miniature size, when so many creative options are available.
A WOP BOP A LU BOP, A LOP BAM BOOM!
"There is nothing I regret so much as my good behavior. What demon possessed me that I behaved so well?" -Henry David Thoreau