OK, found my old polaris kit list which was last used a good few years ago now. It might make for some interesting comparisons with some of Rik's stuff:
Equipment
Terra Nova Laser Photon - 769
Rab Quantum 200 Sleeping Bag - 507
Balloonbed Mark 2 - 79
Vargo Triad stove - 23
Wind Shield/ Pot warmer - 11
Nalgene bottle w. 60ml Meths - 63
Tibetan Titanium 550ml pan - 67
LMF Spork - 10
Lifesystems foil bag - 88
First Aid Kit - 42
Black Diamond Ion torch - 30
Inov8 Race Pro 20 pack - 309
Motorola F3 Mobile Phone - 70
Spare Clothing (i.e. not necessarily worn when I set out):
Gill Pro Speed Jacket - 278
Montane Featherlite Pants - 128
Bridgedale trail socks - 34
Merino base layer - 178
Helly Hansen briefs - 50
Extremeties Power Dry Beanie - 22
Food
Torq bars (3) - 229
Torq gels (6) - 287
Expedition Foods - Chicken Korma - 187
Expedition Foods - Custard with Berries - 145
Fruit tea bags - 5
Nuun tabs (2) - 10
Expedition Foods - Porridge + Strawberries - 149
Protein Powder - 100
Energy Powder - 128
Total Pack Weight - 3998
Clothing - Normal Conditions (Worn)
Watchstrap compass - 6
Canterbury Base layer - 105
Assos Mille Bib - 208
Scott S/S Jersey - 130
Arm Warmers - 65
Scott Windstopper Gillet - 104
Normal Clothing Total - 618
Clothing - Cold Conditions (Worn)
Watchstrap compass - 6
Merino 200 base layer - 218
Assos Mille Bib - 208
Assos Leg Warmers - 118
Scott L/S Jersey - 239
Scott Windstopper Gillet - 104
Cold Clothing Total - 893
Tools (on Bike)
Finish Line lube - 18
Topeak Micro Rocket CB - 55
Topeak Super Chain Tool - 62
Spare tube (2) - 240
CO2 Canister - 84
Misc spares/ puncture kit - 95
Saddle Pack - 126
Tools/spares total - 680
So there you go. That's enough for 12 hours of riding (80-120 miles) with one overnight stop. The pack is pretty light on day two as most of the food has gone, but I do retain an emergency ration and fuel to make something warm if I need to (mandatory in the rules for Polaris). In terms of comfort, you can survive well enough for one night and be fit enough for the second day, but if I was going out on a solo bikepacking trip I'd take a few more things or spec some different stuff.