Seems like a very solid starting point to me :-)
Be sure to keep hold of the following when you expand (and you will):
A-143-2 (quad envelope)
A-143.4 (VC LFO)
As both are superb!
You might want to get more VCAs (or a multiple VCA module) and then look into something a bit more "west coast"? Make Noise Maths and/or a Wogglebug.
Also the A-143-4 is a mental Quad VCO & a real FM monster - a really good purchase!