What I Need Vs What I've Got...

So, for my latest project for Woolmark (an installation piece for their new London showroom) they have chosen this design.... it's 1m x 1m so actually has a lot more 'blobs' than is shown in the sketch.... I think they'll vary between about 4cm and 8 cm across each..
 This is a 'blob' prototype, knitted on four needles using Rowans DK- I'll make up the sizes and colour layout as I go, but I think I need between 350 and 450 of these to cover the piece....
 So that's what I need- what I actually have is 48 balls of yarn and about 2 weeks...better get knitting! (still- don't the colours look lovely)