Here is my upgraded, probably working design:
Urgent Fury class Cruiser 7 750 tons 204 Crew 1195.3 BP TCS 155 TH 360 EM 0
2322 km/s Armour 4-34 Shields 0-0 Sensors 1/1/0/0 Damage Control Rating 3 PPV 28
Maint Life 2.02 Years MSP 289 AFR 160% IFR 2.2% 1YR 94 5YR 1413 Max Repair 273 MSP
Intended Deployment Time: 12 months Spare Berths 1
Magazine 208
60 EP Ion Drive mk II (6) Power 60 Fuel Use 66.5% Signature 60 Exp 10%
Fuel Capacity 750 000 Litres Range 26.2 billion km (130 days at full power)
CIWS-120 (1x6) Range 1000 km TS: 12000 km/s ROF 5 Base 50% To Hit
Size 7 Missile Launcher (4) Missile Size 7 Rate of Fire 70
Missile Fire Control FC113-R50 (1) Range 113.6m km Resolution 50
Size 7 Anti-ship Missile mk II (16) Speed: 20 600 km/s End: 92.9m Range: 114.9m km WH: 6 Size: 7 TH: 103/61/30
Size 7 Anti-ship Missile SR mk II (12) Speed: 20 600 km/s End: 62m Range: 76.6m km WH: 8 Size: 7 TH: 103/61/30
Active Search Sensor MR115-R50 (1) GPS 13650 Range 115.8m km Resolution 50
ECCM-1 (1) ECM 10
Missile to hit chances are vs targets moving at 3000 km/s, 5000 km/s and 10,000 km/s
This design is classed as a Military Vessel for maintenance purposes
It is packed with 16 long range missiles and 12 shorter range, more powerful ones. It will be accompanied with radar, tanker, PD and beam weapon type ships in the future, hopefully smaller than this one.
I'm still worried about few things: the ship's and missiles range, missile size, speed and chance to hit, launcher's rate of fire, amount of armour, ecm/eccm, the amount of missiles aboard, failure rate.
EDIT: More engineering space, now MSP covers max repairs, thanks Erik. Also CIWS and the weight grew to 7750. The bad thing is it took me about 20 years in game, to get here. I wonder what NPR ships will look like after this amount of time.