I've been thinking about this, and there would be a few ways to handle an Aquilo start.
Ignoring the bootstrap problems (starting from nothing).
Let's first look at self-sustaining on Aquilo. For that, the two initial issues are iron, stone and copper. All 3 are needed, and cannot be sourced here.
In theory, you could have a Aquilo orbit start, and drop down iron and copper from orbit, but that would require post 3 planet research, and an orbital platform. Wouldn't give you stone however, unless asteroids are modified to also produce some stone (not completely unreasonable?)
Another option, a simple one, would be to add resources patches to Aquilo. Turning it into a frozen mix of Nauvis and Aquilo. Feels a bit like the most boring option.
I think, the most interesting option, is to have a mineral sludge like solution that the seablock mod has. Maybe the water is just contaminated with minerals, and you can extract those.
Could also combine the two options, have iron/copper be from sludge, while stone is from resource patches.
(bootstrapping is a whole other story that requires more thought then I have now)