Looks like an almost vanilla version to me (at least you didn't used CL EndoSteel to beef it up)
But shouldn't it be a mixed chassis by using an IS-XL?
As for a pure Clan Build - it doesn't feel clannish enough - you did a sane build something every MechJockey of the IS would gladly pilot.
Try something more savage:
Nightstar C
Mass: 95 tons
Tech Base: Clan
Chassis Config: Biped
Rules Level: Tournament Legal
Era: Clan Invasion
Tech Rating/Era Availability: F/X-X-E-A
Production Year: 3070
Dry Cost: 26.356.525 C-Bills
Total Cost: 26.536.525 C-Bills
Battle Value: 2.780
Chassis: Unknown Standard
Power Plant: Unknown 380 Fusion XL Engine
Walking Speed: 43,2 km/h
Maximum Speed: 64,8 km/h
Jump Jets: None
Jump Capacity: 0 meters
Armor: Unknown Ferro-Fibrous
Armament:
2 HAG-30s
1 Heavy Large Laser
2 Heavy Medium Lasers
1 Heavy Small Laser
Manufacturer: Unknown
Primary Factory: Unknown
Communications System: Unknown
Targeting and Tracking System: Unknown
================================================================================
Equipment Type Rating Mass
--------------------------------------------------------------------------------
Internal Structure: Standard 145 points 9,50
Engine: XL Fusion Engine 380 20,50
Walking MP: 4
Running MP: 6
Jumping MP: 0
Heat Sinks: Double Heat Sink 16(32) 6,00
Heat Sink Locations: 1 CT
Gyro: Standard 4,00
Cockpit: Standard 3,00
Actuators: L: SH+UA R: SH+UA
Armor: Ferro-Fibrous AV - 259 13,50
Armor Locations: 4 LT, 3 RT
CASE Locations: LA, RA 0,00
Internal Armor
Structure Factor
Head 3 9
Center Torso 30 46
Center Torso (rear) 10
L/R Torso 20 30
L/R Torso (rear) 7
L/R Arm 16 30
L/R Leg 20 30
================================================================================
Equipment Location Heat Critical Mass
--------------------------------------------------------------------------------
Heavy Small Laser HD 3 1 0,50
Heavy Large Laser RT 18 3 4,00
Heavy Medium Laser RA 7 2 1,00
HAG-30 RA 6 8 13,00
Heavy Medium Laser LA 7 2 1,00
HAG-30 LA 6 8 13,00
@HAG-30 (12) RT - 3 3,00
@HAG-30 (12) LT - 3 3,00
Free Critical Slots: 8
BattleForce Statistics
MV S (+0) M (+2) L (+4) E (+6) Wt. Ov Armor: 9 Points: 28
4 6 5 3 0 4 3 Structure: 5
Special Abilities: CASE, SRCH, ES, SEAL, SOA, FLK 3/3/3