How many of these to push an Arcadia around?
It depends on what looks good. If you can find a couple good surfaces to push against, two sounds reasonable. Maybe three.
Also as a bonus, it does come with its own cargo containers:
An individual container, featured here next to a Chronos. The Chronos can carry these containers, and they're wide enough that the Triton can carry them without looking out of place.
A bunch of the above-mentioned containers get loaded onto a rack, and the whole lot of them get pushed by the cargo pusher:
And here's an Arcadia for scale:
I wasn't planning on having the cargo rack being populated by individual containers. Just a big hollow mesh that makes it look full, maybe another that makes it look half full.