I'll have to skin HG to see how much TL 16 stuff is in there. I don't have Darrians...
To be fair, a TL15 darrian ship isn't a big deal. Most 'generic' imperial ships that travellers will ever get their grubby mittens on are TL12 despite 90-odd percent of the imperium being TL14-15.
Pull out some of the fusion plant efficiency stuff might be useful - was in a signs and portents article recently but I don't recall which issue.
Are you planning on using the normal trade rules? Only an antimatter powerplant eats money hand over fist - a TL16 Antimatter-E gobbles down KCr 60 every 4 weeks, so unless you're shipping catnip to aslans you'll have a hard time keeping the tanks topped off, let alone get past the bank-account destroying maintenance.
Quick suggestion:
TL16 Class 3 Streamlined Hull - Hull 12, Structure 12 - 26.4 MCr
Bonded Superdense, Reflec & Radiation Shielding - Armour/12 - 30 dTons, 131 MCr
Aerofins - 15 dTons, 1.5 MCr
TL16 Jump-E - Rating 3 - 22.5 dTons, 100 MCr
TL11 Manouvre-E - Rating 3 - 67.5 dTons, 40 MCr
TL16 Antimatter-E - Rating 3 - 12 dTons, 80 MCr
Reactor Fuel - 1 Month
Jump Fuel - 1 Jump-3 - 90 dTons*
Fuel Processors - 48 Hours for full refuel - 2.25 dTons, 0.11 MCr
Holographic Bridge - Initiative +1 - 20 dTons, 1.88 MCr
Model/7 Computer - Rating 35 - 30 MCr
Intellect, Fire Control/2, Evade/2, Auto-Repair/1, Jump Control/3 - 11.3 MCr
Very Advanced Electronics - 5 dTons, 4 MCr
Triple Turret (Particle Beam), Accurate, Easy To Repair - 1 dTon, 10 MCr
Single Turret (Beam Laser), Accurate, Easy To Repair - 1 dTon, 2.4 MCr
4 Staterooms - 16 dTons, 2 MCr
30 Repair Drones - 1.5 dTon, 0.3 MCr
Cargo Hold - 75 dTons
2 Docking Clamps - 30 dTon capacity - 2 dTons, 1 MCr
3 Airlocks
Cargo Door - 7.5 dTons simultaneous limit.
Total Cost: 442.2875 MCr
Monthly Maintenance: Cr 36,858
Montly Refuel: Cr 60,000
Monthly Life Support: Cr 8-12,000 depending on occupancy
* I remember reading something about halved fuel requirements. Don't know if that's power plant or jump drive as well. Obviously, if this is the case, swap this space for additional cargo....