Can I win EA(any age) and Vree with this
Yes. Why not?
A pair of
Dargans gives you a nice core - a little unusual compared to the 'normal' Centauri fleet centred on battlecruisers & battleships, but very manouvrable and with impressive forward firepower.
Stealth 4+ isn't
that great. It's pretty good at holding off long ranged fire (5+) but not much cop up-close-and-personal, where you're likely to be taking fire from multiple opponents (2+/3+). Trust it to reduce the fire you take from 'artillery' ships like missile cruisers and torpedo saucers, but treat anything else it stops as as a bonus.
Take them with the
Darkners as well you can field a big, manouvrable battle laser pack, and still have decent fighter support because
Rutarians can do pretty much anything you ask of them. This is a nice, agile force that does well against later-era EA; bypassing heavy armour and interceptors with the lasers and dodging boresighted weapons.
Take them with the
Balvarin you've got a bit of a mismatch; the carrier is slower and yet is the ship that doesn't want to be forced to fight. Its prow-on guns aren't bad, and it will pretty much give you fighter control (especially with some
Raziks in the fighter complement) unless someone else has brought an
Avenger or
Stukeeta. This means your
Dargans are no longer threatened by enemy assault fighters and you can concentrate on blowing the snot out of vulnerable enemies with the
Rutarians. Good for cutting through the Early-era starfury swarms. Keep the carrier somewhere protected from missile fire, though.
Take them with the
Maximus and you add a solid defensive block to the pack; a pair of
Maximus frigates add interceptors that aren't compromised by close range fighting and can keep pace with the strike cruisers. In addition it has hull 6 and enough flak to protect itself and the
Dargan it accompanies. The armament is just matter cannons, no laser, so is best used on already fragile hulls, where its
agile trait helps it line up its guns. Probably best for Vree.