After much dithering, I think I have decided what to knit with the cream aran weight wool I was given for my birthday. Instead of going with one of the patterns pictured in this post, I am going to use this old pattern from 1976 that I found in my Mum's hoard:
The pattern is for double knitting yarn, but looking at the leaf pattern aran weight stitch numbers, I think knitting the smallest size on larger needles (4mm/5mm instead of 3.25mm/4mm) should give me the size I want - a similar fit to the picture above, which is less baggy than the leaf pattern cardigan but still with some positive ease. I'm looking forward to getting started on it once all my Christmas knitting is done and finished (nearly there!).