Kwedech is yours and that borders French Stadacona. It's fortunate France is not a major player.
Since Scotland and Ireland aren't allied in war against you, you should fight one fleet in succession to the other and not both together. Even if you do have to fight both together 4 warships ought to be able to beat 2 warships and 6 light ships, though you are all land and no naval. An admiral will probably offset that, because the other fleets don't have leaders.
I'd imagine that the MTTH events work off your normal unmodified 19 max bb.