Ok, I leaned into the "Patrol Leader" role with this one, to include an HPG, full Air Wing and Company of Marines. The cargo might seem light, but I broke out consumables and provided pretty deep missile magazines. I also noticed the cost difference between 300K and 400K tons was negligible, so I went with the latter. Since I hand jammed this, there are likely errors...
Porter Class
Tonnage 400,000.0
Thrust 4/6 96,000.0
Fuel 12,500.0 (316.2955466 Burn Days)
Pumps 250.0
SI 38,000.0 95
KF Drive (Compact Core) 181,000.0 Integrity: 10
Lithium-Fusion Battery 4,000.0
Sail 50.0 Integrity: 4
Controls 1,000.0
Base Crew Quarters 875.0 7x125
Double Heat Sinks 995.0 483 Free Total Heat: 2,956
Armor 760.0 760 LFC: 155+10 Nose, 121+10 F/A Sides, 121+10 Aft
NL/45 14,400.0 16 900 4 Quad mounts (Nose/BS/Aft), 1120 Heat
AR-10 Launchers 2,000.0 8 250 Dual mounts in 4 corner arcs, 400 Heat
LAMS 24.0 16 1.5 Dual mounts in all arcs, 112 Heat
ER PPCs 252.0 36 7 Quad mounts in 8 arcs (2 Nose), 540 Heat
SCL/1s 2,400.0 16 150 4 Quad mounts (Nose/BS/Aft), 384 Heat
Large Pulse Lasers 280.0 40 7 Quint mounts in 8 arcs, 400 Heat
Mobile HPG 50.0 1 50 10 Extra RTOs 40
Communications Equipment 2.0 2 1 2 Extra RTOs
Hyperspectral Imager 7.5 1 7.5 1 Extra RTO (Nose)
Large NCSS 500.0 1 500 12 Extra RTOs
Medium Grav Deck 100.0 1 100
Small Craft Cubicles 1,200.0 6 200 5 racks each
ASF Cubicles 2,700.0 18 150 2 racks each
Docking Collars 2,000.0 2 1000
Doors 0.0 9 0 2 Small Craft, 6 ASF, 1 Cargo
Infantry Bay (Foot) 20.0 4 5 30 racks each
AsTech Bays 55.0 11 5 30 racks each
BA Bays 96.0 12 8 6 racks each
MASH 3.5 3.5 1 1 Operating Theater
"Field Kitchen" 3.0 3 1 3 additional crew
Gunners 371.0 7 53 Long Term Quarters
RTOs 175.0 7 25 Long Term Quarters
Air Wing 1,533.0 7 219 Long Term Quarters
Marines 1,715.0 7 245 Long Term Quarters
Cooks 21.0 7 3 Long Term Quarters
Officer/Chief Upgrades 303.0 3 101 10 tons vice 7 for Crew Quarters
Life Boats 1,260.0 7 180 7 PAX per Lifeboat
Missle Bays 8,000.0 8 1000 Various missiles totaling 1,000 tons per launcher
Consumables 1,005.0 3.35 300 Crew Days 1 Crew Day = 670 Man Days = 3.35
Cargo 24,094.0 Usually more food, always equipment for harvesting water from asteroids
Costs
Controls
Bridge 4,200,000
Computer 200,000
Life Support 6,290,000
Sensors 80,000
Fire Control Computer 100,000
Gunnery Control Systems 80,000
Structure 9,500,000
Drive Unit 8,000,000
Engine 96,000,000
Engine Control Unit 1,000
K-F Drive
Drive Coil 210,000,000
Initiator 35,000,000
Controller 50,000,000
Liquid He Tankage 500,000
Sail 2,500,000
Charging System 900,000
LF Battery 4,184,600,000 (a x15 multiplier means this component is x14 the sum of the rest)
K-F Support Systems 1,800,000,000
Attitude Thrusters 25,000
Fuel Tank 2,500,000
Armor (LFC) 76,000,000
Double Heat Sinks 17,736,000
Crew Quarters 10,050,000
Officer Quarters Upgrades 1,515,000
Lifeboats 900,000
ASF Cubicles 360,000
Small Craft Cubicles 120,000
Infantry Bays 1,125,000
BA Bays 1,440,000
NL/45 13,600,000
AR-10 Launchers 2,000,000
LAMS 3,600,000
Large Pulse Lasers 7,000,000
ER PPCs 10,800,000
MASH Core Unit 35,000
Field Kitchen 25,000
SCL/1s 3,520,000
2Tons Communications Equipment 20,000
Hyperspectral Imager 550,000
Large NCSS 250,000,000
Mobile HPG 1,000,000,000
Medium Grav Deck 10,000,000
Sub Total 7,820,872,000
Final Cost 15,641,744,000