Of course, you'll have to make a deal with the Dons for them. Go on a killing spree, instead of claiming the bounties, ask for a few gunboats.
Of course, that'll only mean you'll have a small number of gunboats, but do you really need that many?
P.S: Of course, I just realised I say "of course" a lot. :$
Congratulations! You'll finally be able to make use of that exclusive contract of yours with the 101st, which, frankly, has always struck me as a complete ripoff on your behalf prior to this. I'm excited for you guys.