What the ENFP-AS personality is like
Steady and Self-reliant on top of the Firefly: things take a while to reach you, and when they do, you sort them yourself. The festival schedule collapsed, the flight is gone, and you're already grinning and saying "okay, what if we".
Under pressure
Pressure makes you lighter, not tighter. You joke, reshuffle and pick a new route before anyone has finished panicking. Things take longer to reach you, so the first hour of a crisis is often your best.
From outside it looks like you're not bothered. Usually you aren't, and sometimes the weight arrives on Thursday, long after the thing itself is solved, when nobody is there to say it was a lot.
When something goes wrong
You go quiet in a cheerful way and fix it yourself. You'd rather rearrange your own week than explain, because explaining slows down the fun of solving it. Friends find out afterward, as a good story with you in the middle.
Part of the cost is that they'd have joined in, and part is that the story leaves out the hard bit.
How the two fit
The pair makes you the Firefly who keeps the party going when plans fall apart. The cost is that the bright version is the only one anyone meets: no one brings you their heavy thing, assuming you'd shrug, and you take on one more yes with no signal of the load. The Summer Firefly talks it over, the Wandering Firefly feels it at night, and the Wild Firefly feels it out loud. Yours is the one that glows steadily.

ENFP
INFP-AS
ESFP-AS
ENTP-AS
ENFJ-AS