The reason why not to bring LFs straight away is that it would rile up much uproar, you know, the "omg nomadzorz, bring more caps!" stuff with base camping. Just put later when you get sufficient defenses and players to deal with that. Keep low profile for the beginning, saves nerves and unnecessary "holy wars" with battle of Endor syndrome.
Well yea, talk to Marburg, see what can be there.
Nomad blasters/cannons could be acquired from keepers actually, provided the necessary allied status, since we don't know where to put them and sell en masse to vendors after a good patrol day. That would make their use and origin fairly legit in terms of RP. They're environment safe. RoHS compliant.
Names. I'd suggest celtic and/or slavic mythologies to use as a basis for ships tags/names.
As there are no wilde/nomad npcs in Bretonia it's not like rep will be an issue since you'll not deal with it anyway.
Still, ID/rule conflicting situations, as regards what is a viable target, what is not, etc, etc. Traders, bounty hunters, etc.