Cygnar - Beyond the Battlebox

[stygmatyr]

Long gunners definitely, as they give you some more ranged capability, i recommend gun mage captain adept, a very useful solo for 2pts, Journeyman warcaster is an interesting one as he can control warjacks the same as your main warcaster and gets three of his own focus.
Really it depends on what style you want to go for as theres good models for everything, there are good models for melee:- Stormguard (unit), stormblades(unit), Hammersmith (jack), stormclad(jack)
All the models with 'storm' in their name are lightning based too.
Good models for ranged: Long gunners(unit), Trenchers(unit), Arcane tempest gun mages(unit) Defender (jack), charger(jack), Cyclone (jack), gun mage captain(solo)

I would reccomend having a look at getting the cygnar forces book so you can see the stats of things for yourself, as well as all the other warcasters, as i can only give advice on what i've played against, in that respect I would doubly recommend the Gun mage captain as he's been a thorn in my side for many a game