Needs a Missile variant, got something in mind? Maybe an advanced Command variant to lead a Point?
Well I got this as a missile variant: 2x LRM-12 (18.5 salvos each)
Type: Nixe 5 (Quad)
Technology Base: Clan (Wars of Reaving)
Tonnage: 15
Battle Value: Incomplete
Equipment: Mass
Internal Structure: 1500 KG
Engine: 45 1000 KG
Walking MP: 3
Running MP: 5
Heat Sinks: 0 0 KG
Cockpit: 750 KG
Armor Factor: 65 3250 KG
Internal Armor
Structure Value
Head 4 7
Torso 15 26
Legs 16 26
Main Gun 2 6
All Weapons and Ammo Location Mass(KG)
LRM 1 (12) MG 2400
LRM 1 ammo (222) MG 1850
LRM 1 (12) MG 2400
LRM 1 ammo (222) MG 1850
The program that I am using displays the total number of missiles.
[Command variant]
And assuming that Nova EWS doesn't require extra heatsinks it should be possible to mount it like a Watchdog with an ERLL:
Edit: it turns out that it doesn't.

Type: Nixe 6 (Quad)
Technology Base: Clan (Wars of Reaving)
Tonnage: 15
Battle Value: Incomplete
Equipment: Mass
Internal Structure: 1500 KG
Engine: 45 1000 KG
Walking MP: 3
Running MP: 5
Heat Sinks: 12 3000 KG
Cockpit: 750 KG
Armor Factor: 65 3250 KG
Internal Armor
Structure Value
Head 4 7
Torso 15 26
Legs 16 26
Main Gun 2 6
All Weapons and Ammo Location Mass(KG)
ER Large Laser(1) MG 4000
Nova CEWS(1) T 1500
Maybe a Proto AC?
Missile support could work two given its Reaving era maybe even the Fusilade
20 shots of ammo (so that special ammo can be used) and a big TAG for backup:
Type: Nixe 7 (Quad)
Technology Base: Clan (Wars of Reaving)
Tonnage: 15
Battle Value: Incomplete
Equipment: Mass
Internal Structure: 1500 KG
Engine: 45 1000 KG
Walking MP: 3
Running MP: 5
Heat Sinks: 0 0 KG
Cockpit: 750 KG
Armor Factor: 65 3250 KG
Internal Armor
Structure Value
Head 4 7
Torso 15 26
Legs 16 26
Main Gun 2 6
All Weapons and Ammo Location Mass(KG)
ProtoMech AC/8(1) MG 5500
ProtoMech AC/8ammo (20) MG 2000
TAG(1) MG 1000