She does have the 4 White Sharks aft, along with the LRM20s and (newly added) GRs on the aft corners, plus the PPCs and UAC20s if range drops to medium.
Changes to the secondary btty, dropped 12 fighters, increased cargo and fuel. Should be less then 20 weapons (except AMS) per side. Personnel quarters reduced to steerage. Armor bumped
Class/Model/Name: Galveston
Tech: Inner Sphere
Ship Cost: $7,049,124,000.00
Magazine Cost: $8,532,000.00
BV2: 44,797
Mass: 360,000
K-F Drive System: Compact
Power Plant: Maneuvering Drive
Safe Thrust: 4
Maximum Thrust: 6
Armor Type: Lamellor Ferro-Carbide
Armament:
14 Naval AC 10
20 Naval Laser 35
8 Capital Launcher White Shark
20 Gauss Rifle (IS)
40 LRM 20 (IS)
10 AC 20 Ultra (IS)
24 PPC
48 AMS (IS)
Equipment: Mass
Drive: 86,400.00
Thrust
Safe: 4
Maximum: 6
Controls: 900.00
K-F Hyperdrive: Compact (9 Integrity) 162,900.00
Jump Sail: (4 Integrity) 48.00
Structural Integrity: 120 43,200.00
Total Heat Sinks: 1144(2288) Double 684.00
Fuel & Fuel Pumps: 13965 points 5,697.72
Fire Control Computers: 0.00
Armor: 750 pts Lamellor Ferro-Carbide 750.00
Fore: 135
Fore-Left/Right: 125/125
Aft-Left/Right: 125/125
Aft: 115
(note-no extra from SI)
Dropship Capacity: 2 2,000.00
Grav Decks:
Small: 0 0.00
Medium: 3 300.00
Large: 0.00
Escape Pods: 10 70.00
Life Boats: 10 70.00
Crew And Passengers:
30 Officers in 2nd Class Quarters 210.00
87 Crew in Steerage Quarters 435.00
56 Gunners and Others in Steerage Quarters 280.00
34 Bay Personnel 0.00
0 1st Class Passengers 0.00
0 2nd Class Passengers 0.00
83 Steerage Passengers 415.00
# Weapons Loc Heat Damage Range Mass
4 Capital Launcher White Shark Nose 60 120 (12-C) Ext-C 480.00
4 Gauss Rifle (IS) Nose 4 60 (6-C) Long-C 60.00
6 PPC Nose 60 60 (6-C) Med-C 42.00
10 Naval Laser 35 FL 520 350 (35-C) Long-C 7,000.00
10 LRM 20 (IS) FL 60 120 (12-C) Long-C 100.00
8 AMS (IS) FL 8 24 (2.4-C) PDS 4.00
10 Naval Laser 35 FR 520 350 (35-C) Long-C 7,000.00
10 LRM 20 (IS) FR 60 120 (12-C) Long-C 100.00
8 AMS (IS) FR 8 24 (2.4-C) PDS 4.00
7 Naval AC 10 RBS 210 700 (70-C) Long-C 14,000.00
4 Gauss Rifle (IS) RBS 4 60 (6-C) Long-C 60.00
6 PPC RBS 60 60 (6-C) Med-C 60.00
8 AMS (IS) RBS 8 24 (2.4-C) PDS 4.00
7 Naval AC 10 LBS 210 700 (70-C) Long-C 14,000.00
4 Gauss Rifle (IS) LBS 4 60 (6-C) Long-C 60.00
6 PPC LBS 60 60 (6-C) Med-C 60.00
8 AMS (IS) LBS 8 24 (2.4-C) PDS 4.00
4 Gauss Rifle (IS) AR 4 60 (6-C) Long-C 60.00
10 LRM 20 (IS) AR 60 120 (12-C) Long-C 100.00
5 AC 20 Ultra (IS) AR 80 150 (15-C) Med-C 75.00
8 AMS (IS) AR 8 24 (2.4-C) PDS 4.00
4 Gauss Rifle (IS) AL 4 60 (6-C) Long-C 60.00
10 LRM 20 (IS) AL 60 120 (12-C) Long-C 100.00
5 AC 20 Ultra (IS) AL 80 150 (15-C) Med-C 75.00
8 AMS (IS) AL 8 24 (2.4-C) PDS 4.00
4 Capital Launcher White Shark Aft 60 120 (12-C) Ext-C 480.00
6 PPC Aft 60 60 (6-C) Med-C 42.00
Ammo Rounds Mass
Naval AC 10 Ammo 350 70.00
Capital Launcher White Shark Ammo 48 1,920.00
Gauss Rifle (IS) Ammo 480 60.00
LRM 20 (IS) Ammo 720 120.00
AC 20 Ultra (IS) Ammo 240 48.00
AMS (IS) Ammo 240 20.00
12 Fighters (2 doors)
2 SMallCraft (1 door)
7,200t Cargo (1 door)
I could bump it to 365kt, for a minuscule extra cost which gives me an extra ~920 tons for cargo and fuel.