Year of projects- in which the blanket has reached the end of the pattern, but not the end of the yarn

The title is a bit of an exaggeration, but I am prone to that. The blanket has reached the yellow "suggested cast off for blanket" line on the pattern chart. There are actually another two pattern repeats on the chart, plus I noticed someone has writtne out a few more on their Ravelry project, so fear not, the blanket wil grow more!

Here it is so far, it is still scrunched up as the cable is a bit shorter than the edge (is it a circumference or a perimeter when it is a wiggly circle?)

You can see that the yarn ball has shrunk a lot, it now fits into my hand, just, but that is a lot smaller than when it was the size of my head. I weighed it, I have 126g left. Of course due to the nature of circles as it grows more yarn is needed for each round, so the fact I have more than 1/5 of the yarn left does not mean it will get massively bigger. There is probably an equation to work it out, I suspect it involves pi (the mathematical one, not the edible one), but maths is not my strongest subject so I will just keep knitting and when it runs out is when the blanket finishes (and yes, engineer nerds can be bad at maths, I am better with the edible kind of pie).

I measured it which it was on the floor.

I am currently at 18 1/2" from the centre to the furthest outside edge. For some reason I seem to want it to be 4' across, I don't know where this number came from but since each pattern repeat only adds about 1" I don't think there will be enough yarn to get there. Admittedly this is unblocked, which will probably add a bit more as the fan bit is very scrunched.

Next week we might be talking about edging, I may need your views on that as I can't decide between the fancy pattern edging and keeping it simple.