Open to interpretation, but the planetoid cruisers would be between twenty five to seventy five kay tonnes, probably jump factor two stealthed.
With the new armour rules, unlikely to sacrifice a third of the ship for no gain in protection, so all planetoids.
The crew is awaiting depopsicling, and likely there are Confederation Army Commando and Marine Special Forces units embarked, plus holds full of weapons of sleeper cells.
Since there's been no advance in technology level since the War of Imperium Aggression, expect the infiltrated ships to be equipped at technological level fourteen.
Outside of the Trojan horses and interstellar buggies, I don't recall SolSec having cruisers.