Hey Feep, when you said it doesn't matter how big the ship is, were you just saying that?
I designed a large cruiser with every system I could use. Its estimated cost is 5.5 million at TL25. Is that too expensive? :(
EDIT:
Modified
STREAMLINED STARSHIP
Tech Level 25
Armor Level 7 = TL7
1,519,860kg Mass = TL5
32 Crew+Passenger+Troop Berths = TL25
Manufacture = TL25
Combat Factors
Attack 147, Weapon Bay 1
Defend 104
Estimated Cost 5,496,000¢ at TL25 Using Q192 Components
HULL
Metal Hull Module TL25
Armor Level 7, Defend +77
4,727m³ Volume
62.07m Length, Must Spawn at Station
31.04m Width
12.19m Height, 4 Decks
1,519,860kg Mass
969,922kg Equipment
29,431kg Fuel
520,506kg Hull
ENGINEERING
332 Maneuver Drive Units
Gravity Drive Module TL25
541m/sec/sec Acceleration, Attack/Defend +27 FAST
87m/sec/sec Vertical Acceleration
88 Power Plant Units
Power Plant Module TL25
Capacitor 193.6
13 FTL Drive Units
Wormhole Drive FTL Module TL25
73 Units NEEDED to Engage
FUEL
Fuel Cell TL25
925m³ Hydrogen
28.3 Days at 32.67m³ Hydrogen per Real Day while Idling
Life Support, Maneuver Drive, Sensor and Shield Powered On
103 Days at 8.98m³ Hydrogen per Real Day while Holding
Life Support, Sensor and Shield Powered On; Maneuver Drive on Hold
AVIONICS
Command And Control Module TL25
Captain's Chair - Bridge 1 Deck 4
Engineer Station - Engine Room 1 Deck 2
Fire Control Station - Bridge 1 Deck 4
Fire Control Station - Weapon Bay 1 Deck 2
Helm - Bridge 1 Deck 4
Medic Station - Sickbay 1 Deck 3
Navigator Station - Bridge 1 Deck 4
Power Relay Station - Engine Room 1 Deck 2
Sensor Station - Bridge 1 Deck 4
Sensor Station - Sensor Room 1 Deck 2
Shield Station - Bridge 1 Deck 4
Shield Station - Shield Room 1 Deck 2
Transporter Station - Transporter Room 1 Deck 3
2 Game Tables
18 Life Support Units
Life Support Module TL25
31 Sensor Units
Sensor Module TL25
Planetary Range 441,732m
31 Shield Units
Energy Shield Module TL25
Absorbs 3,410e per Side
Sickbay 1 Deck 3
Surgery Medical Module TL25
Transporter Room 1 Deck 3
Personnel Transporter Module TL25
1 Transporter Pads
ARMAMENT
Weapon Bay 1, 30 Units
Cannon Bay Module TL25, Attack +120
Range 42,602m
Capacitor Adequate for 6 Consecutive Shots at Full Power
14 Turrets
Capacitor Adequate for 13 Shots per Turret
Hall 1 Deck 2
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 2
TL25
Range 1,099m
Hall 1 Deck 2
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 2
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 2
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 2
Pulse Laser Turret Module TL25
Range 1,099m
Barracks 1 Deck 2
Pulse Laser Turret Module TL25
Range 1,099m
Barracks 1 Deck 2
Pulse Laser Turret Module TL25
Range 1,099m
Barracks 1 Deck 3
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 4
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 4
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 4
Pulse Laser Turret Module TL25
Range 1,099m
Hall 1 Deck 4
Pulse Laser Turret Module TL25
Range 1,099m
Galley 1 Deck 4
Pulse Laser Turret Module TL25
Range 1,099m
CREW
1 Officer Stations
12 Crew Stations
1 Drivers
14 Turret Gunners
QUARTERS
1 Officer Berths
16 Crew Berths
16 Troop Berths
HOLD
319m³ Storage Space
Room for 8,258 Commodities
VEHICLE BAYS
174m³ Vehicle Bays
 1 APC
DAMAGE CONTROL
131,940 Total Hit Points
126,220 Structure Hit Points
11,220 Fuel Cell
8,510 Hold
101,850 Hull
4,640 Vehicle Bay
5,720 Equipment Hit Points
130 Command and Control
3,320 Maneuver Drive
180 Life Support
880 Power Plant
310 Sensor
310 Shield
10 Medical
10 Transporter
140 Turret
300 Weapon
130 FTL Drive
MANUFACTURE
 14,992 Metal
 1,132 Electronic Part
 1,388 Mechanical Part
 608 Plastic
 42 Cryo Heat Sink
 44 Heavy Weapon
 90 Textiles
 332 Grav Coupling
 180 Air
 13 Lumenite
 21 Computer
 1 Io Tube
 Electricity
 Fitting Wrench
 Screw Driver
 Clamp
 Soldering Iron
 Pliers
 Torque Wrench
 Oscilloscope
 Tongs
 Hammer
 Wrench
 Glue Gun
 Sewing Needle