In reply to DTE: As regards krabs I am a massive fan wire gates and of DMM Prowires in particular. If you are happy with wirelocks I'd stay with them.
For trad I have been carrying a basis of 6x30cm extenders and 4x60cm extenders (tripled - 20cm effective) and 2x 60cm slings with a single krab each. If I require more extenders I add addtional 60cm slings and as many of my 15cm (sport climbing) extenders as I see fit.
I would recommend you get around x6 30cm slings (Mummat 8mm versions if finances permit) and change some (say 4) of your 10cm to that length and buy additional krabs if required.
I would also get four (x4) 60cm x 8mm Mummat slings + extra krabs and make up 4 tripled extenders. [The Mammut slings are expensive but in this case being very thin, the reduction in bulk is extremely desiarable - most of the better gear shops are now stocking them]
Assuming you rack each of your cams on its own krab I would also make sure that you have at least x4 60cm slings with a single krab each for extending them.
HTH
Mark