Premises:
The year is 2450. Humanity has expanded beyond Earth, our cradle of life and to the coldest depths of space, expanding across the Orion arm of the galaxy and starting to expand into the Galactic Core. Managing the thousands of worlds that Humanity owns, is the Terran Hegemony. The Hegemony is powerful in many ways. It's ground forces are advanced, with heavy main battle tanks and mechas being common during most operations, from training to downright invasion. The Hegemony's air forces are also rather expansive and vast; Multi-role fighter-bombers, bombers, and other kinds of aircraft dominate the Hegemony's skies. Most impressive however, is the Hegemony's space fleet. Thousands of vessel make up the fleet. Plasma weaponry is being introduced, lasers are common, so are ion beams. The pride and joy of any Hegemony warship, however, are rail-guns. The heaviest warships in the Hegemony's space navy mount thousands of them.

What i'm looking for is good space-opera style RP, centered around a Hegemony navy task-force. The main goal of it will be to role-play an eventual first-contact war once i have enough players for a large enough fleet. Be it the commander of a battalion of ground pounders or a pilot for one of the many Hegemony aircraft/space fighters, i'm looking for it all.
Example of a ship. 

[hider=Hegemony Service Vessel Montana]
Length-Width-Height
1750m 655m 358m
Class: Dreadnaught
Tonnage: 16,000,000 tonnes
[url=http://www.gamersglobal.de/sites/gamersglobal.de/files/galerie/1183/nexus-2-human-battleship.jpg]Reference image[/url]

[b]PRIMARY ARMAMENT[/b]
120 dual 240mm rail-gun turrets firing 300 rounds/minute with interchangeable ammo.
Ammo types: Hull-piercing High Explosive, Radiological anti-biological hull-piercing, Semi-guided Shaped Explosive, Debris-Distributing high explosive Flak.
(HPHE, RABHP, SGSE, DDHEF)
140 550mm guided missile launchers firing 40 laser/radar guided missiles/salvo, approx reload is 45 seconds.
56 850mm radar/laser/fly-by-wire guided torpedoes. Nuclear-tipped, yield is approximately 25 megatons. Shaped charge. 
15GW Heavy Ion Lasers. Range is ~5 million KM, cool-down is 60 seconds.
48 24GW Plasma cannons. Range is 2 million KM, cooldown is 240 seconds.

[b]SECONDARY ARMAMENT[/b]
120 8GW Point-defense lasers
140 40mm Shrike auto-cannons firing 1200 rounds/second.
6 2500mm rail-gun turrets firing 4 rounds/minute. Rounds are depleted uranium solid-core fusion explosive.

[b]ARMOR/SHIELDING[/b]
Armor is rated as 35 meter thick Iridium-Titanium alloy interweaved with Carbon-fiber netting
Outer layer is 2m thick nanite-regenative armor.
Shielding is Solid-State Plasma shielding. Extremely powerful.

[b]COUNTERMEASURES[/b]
430 chaff rocket launchers
120 flare launchers
60 ECM emitters located around the hull, providing extremely large amounts of jamming power totalling 120TW of EM radation.

[b]ENGINES[/b]
Intra-system engines are fusion-powered CARV6 forced-fusion engines providing 1,800,000 tonnes of thrust. x12
Inter-system engines are VAR4 VASMIR drives providing 600,000 tonnes of thrust. x6
FTL engines are Mass-canceling fields combined with Alcubierre Drive technology to provide a 120x SoL rating. 

[b]REACTORS[/b]
8 Tokamak heavy fusion reactors providing .75 YW of power. (Yottawatt)
6 Anti-Matter Medium reactors providing 1200GW of power.

[b]CREW[/b]
60,000 crew across the ship and all decks.
4 Battalions of Orbital-Drop Troopers. 2 Mechanized Trooper Battalions.

[b]COMPUTER SYSTEMS[/b]
6 Main Computer cores manage all systems. All systems are EMP hardened and isolated to prevent hacking attacks.
4 Backup computer cores on standby. EMP hardened and isolated from primary networks.
2 AIs assist in managing the ship, named Regalia, and Aegis.

[b]FIGHTER AND BOMBER COMPLEMENT[/b]
Facilities to launch and re-arm 120 Tornado Fighter-bombers with 40mm auto-cannons firing 1000 rounds/minute. Each one carries 4 guided 4 kiloton tipped tactical nuclear missiles. 
Facilities to launch and re-arm 60 Wailer Heavy Bombers. 4 dual 30mm auto-cannons mounted on turrets provide defense, along with a medium-strength plasma shield. Each one carries 6 2 megaton shaped charge nuclear-tipped missiles. 

[/hider]