Exactly timer is the tool, that Abyss uses to force you find balance between tank and DPS. Too much tank - you are killed by timer. Too much DPS - you get neuted and killed by NPC.
I have never tryed Caracal in Abyss, but I believe that Caracal Navy fit should work for you in T1 Abyss (and it costs about 100 milions…)
[Caracal Navy Issue, abyss T1]
Ballistic Control System II
Ballistic Control System II
Ballistic Control System II
Ballistic Control System II
50MN Quad LiF Restrained Microwarpdrive
Large Shield Booster II
Medium Electrochemical Capacitor Booster I, Navy Cap Booster 800
Adaptive Invulnerability Field II
Adaptive Invulnerability Field II
Rapid Light Missile Launcher II, Scourge Fury Light Missile
Rapid Light Missile Launcher II, Scourge Fury Light Missile
Rapid Light Missile Launcher II, Scourge Fury Light Missile
Rapid Light Missile Launcher II, Scourge Fury Light Missile
Rapid Light Missile Launcher II, Scourge Fury Light Missile
Rapid Light Missile Launcher II, Scourge Fury Light Missile
Medium Anti-Thermal Screen Reinforcer II
Medium Processor Overclocking Unit I
Medium Capacitor Control Circuit II
You will have to pulse your MWD and watch carefully reload times for RLML.
Abyss BS often are heavily damaged at the start but quickly rep themselves back. Do not lose your time and kill those behemots first , if your tank is holding. Remember to spiral to them (do not fly directly) if your tank is not holding.