Thank you so much for all your comments, support and stories. I have done a bit more research.
The kit comes with 2.75 needles,which is a bit confusing as the booklet says the mid calf socks can be knitted with from the yarn and needles in the kit. The tension square asks for 3mm needles though and Brenda, indeed has a firmer knit than the 3.25 needles, however it is smaller than the required tension according to the pattern. How can I remedy this?
The yarn I think is sports weight (is that aran?), or double knitting, certainly not 4ply, and the finished size should be women's medium. With size 4 shoe, I consider myself to have small feet. Do I?
Even more confusing it's written in k2p2 rib, but the gauge is in stocking stitch, which I intend to use. I shall definitely divide the wool into two, but as I only have one set of 5 pins will have to do one at a time. However I have found another set of 2.75 4 pins. so could have one roaming needle and knit the two simultaneouly.
And the learning from this exercise, thus far, never throw the ball band away until the garment is completed!
CR