How do you keep them all straight in your head?
I keep a highly detailed and cross-referenced Word document - currently 19 pages in length - about all the important or relevant aspects of my primary character's gameplay.
I update it during quiet moments in gameplay and at the end of each session.
An abridged and very brief sample:
NAME: kangamac
GTAO: 2 641
MBA: 224
LSCM: 204
PLAY TIME: 1 Year 271 Days 22 Hours
DEATHS: 42
BANK: $2 000 000 000
CASH: $961 502 400
CHIPS: $5 000 000
SAVINGS: $50 000 000 / $68 755 000
DEL PERRO HEIGHTS, APARTMENT 20
Albany Buccaneer - Orange / Black (Muscle) (2) - Make / model / colour scheme / vehicle class / passenger capacity / combat capabilities / special capabilities
Albany Hermes - Grey / Chrome (Muscle) (2)
Albany Primo - White (Sedans) (4)
Albany V-STR - Red (Sports) (4)
Albany Virgo - Black / Chrome (Muscle) (2)
Albany Washington - Black (Sedans) (4)
Canis Freecrawler - Grey / Black (Off-Road) (4)
Canis Kamacho - Green / Black (Off-Road) (4)
Canis Mesa - Green / Black (Off-Road) (4)
Canis Mesa - Green / Black (SUVs) (4)
WEAZEL PLAZA, APARTMENT 101
Annis 300R - Brown (Sports) (2) (Armed + Armoured) (IT)
Annis Elegy RH8 - Red / Black (Sports) (2)
Annis Elegy Retro Custom - Purple (Sports) (2)
Annis Euros - Green (Sports) (2)
Annis Hellion - White / Black (Off-Road) (4)
Annis RE-7B - Purple / Black / Chrome (Super) (2)
Annis Remus - Orange (Sports) (2)
Annis S80RR - Purple / Black (Super) (1)
Annis Savestra - Purple (Sports Classics) (2)
Annis ZR350 - Purple / Livery (Sports) (2)
ECLIPSE TOWERS, SUITE 3
BF Club - White (Compacts) (2)
BF Dune FAV - Grey (Off-Road) (2) (Armed)
BF Weevil - Green (Compacts) (2)
Overflod Autarch - Orange / Black (Super) (2)
Overflod Entity MT - Yellow (Super) (2) (HSW)
Overflod Entity XF - Purple / Black (Super) (2)
Overflod Entity XXR - Orange / Black (Super) (2)
Overflod Imorgon - Red / Black (Sports) (2)
Overflod Tyrant - Yellow / Black (Super) (2)
Overflod Zeno - Blue (Super) (2)
LSIA HANGAR 1
B-11 Strikeforce (Planes) (1) (Armed)
Buckingham Akula - (Helicopters) (4) (Armed + Armoured)
Buckingham Conada - (Helicopters) (4)
Buckingham Howard NX-25 - (Planes) (1)
Buckingham Pyro - (Planes) (2) (Armed)
FH-1 Hunter - (Helicopters) (2) (Armed + Armoured)
LF-22 Starling - (Planes) (1) (Armed)
Mammoth Hydra - (Planes) (1) (Armed)
Mammoth Tula - (Planes) (5) (Armed)
Nagasaki Buzzard Attack Chopper - (Helicopters) (4) (Armed)
Nagasaki Havok - (Helicopters) (1) (Armed)
P-996 LAZER - (Planes) (1) (Armed)
Pegassi Ultralight - (Planes) (1)
Savage - (Helicopters) (4) (Armed + Armoured)
Sea Sparrow - (Helicopters) (2) (Armed)
V-65 Molotok - (Planes) (1) (Armed)
Western Annihilator Stealth - (Helicopters) (6) (Armed)
Western Cuban 800 - (Planes) (2) (Armed)
Western Seabreeze - (Planes) (2) (Armed)
Western Company Rogue - (Planes) (2) (Armed)
WANTED: $8 784 350 +
VEHICLES - LAND: $5 829 350 +
Bravado Half-Track - Brown (Military) (3) (Armed + Armoured): $2 254 350 +
Dinka Blista Kanjo - Yellow (Compacts) (2): $580 000 +
Imponte Ruiner ZZ-8 - Black (Muscle) (2): $1 320 000 +
Obey 10F - Red (Sports) (2): $1 675 000 +
VEHICLES - SEA: $2 955 000
Kurtz 31 Patrol Boat - (Boats) (4) (Armed): $2 955 000
VEHICLE - COLOURS: 10
Black - 35 + 1
Grey - 36
Blue - 36
Red - 35 + 1
Brown - 31 + 1
Green - 29
White - 29
Orange - 18
Purple - 18
Yellow - 17 + 1
VEHICLES - UNMODIFIED: 4
Coil Cyclone II - Green / Black (Super) (2) (HSW) +
Declasse Vigero ZX - Blue / Black (Muscle) (2) (HSW) +
Pegassi Weaponized Ignus - Black (Super) (2) (Armed) (HSW) +
Weeny Issi Rally - Green (SUVs) (2) (HSW) +