Kronos is the best option because of already stated reasons. Apart from Vindicator I would also try to use DNI:
[Dominix Navy Issue, PVE Brawler]
Fourier Compact Tracking Enhancer
Drone Damage Amplifier II
Drone Damage Amplifier II
Mark I Compact Power Diagnostic System
Magnetic Field Stabilizer II
Damage Control II
Magnetic Field Stabilizer II
Tracking Computer II, Optimal Range Script
100MN Afterburner II
Pith B-Type X-Large Shield Booster
Heavy Capacitor Booster II, Navy Cap Booster 3200
Dread Guristas Kinetic Deflection Field
Dread Guristas Thermal Dissipation Field
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Large Anti-Thermal Screen Reinforcer II
Large Polycarbon Engine Housing II
Large Polycarbon Engine Housing II
small drones
Garde II x5
Ogre II x5
Over 1500 DPS cold, over 900 DPS tank vs serpentis, but speed is only 422 m/s and you need rather expensive, very large cap boosters (cargo hold was buffed on Battleships, remember ? )
Fit is less, than 1 billion at current prices and any decent RHML Rattlesnake will beat it by mile… But you were asking for blaster brawler and here it is…
Vindicator will be more effective (more DPS, much quicker etc) but will eat even more cap boosters (fit also less than 1 bilion). Unlike DNI, it relyes on webs and guns, so it will work less quick versus scattered targets (DNI use bounced large drones, that are 60 km range sphere of influence, Vindicator will have to fly those 60 km by itself)
[Vindicator, Pve ]
Damage Control II
Magnetic Field Stabilizer II
Magnetic Field Stabilizer II
Federation Navy Magnetic Field Stabilizer
Co-Processor II
Drone Damage Amplifier II
Drone Damage Amplifier II
Dread Guristas Thermal Dissipation Field
500MN Y-T8 Compact Microwarpdrive
Federation Navy Stasis Webifier
Pith X-Type X-Large Shield Booster
Heavy Capacitor Booster II, Navy Cap Booster 3200
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Neutron Blaster Cannon II, Void L
Large Processor Overclocking Unit I
Large Anti-Thermal Screen Reinforcer II
Large Anti-Kinetic Screen Reinforcer II
Hobgoblin II x5
Ogre II x4