That's for the dk - you can probably get that with the worsted on a size 5, but it's going to be way too tight. Go up to an 8 or 9 (5mm or 5.5) and see what you get. Will probably be more like 4 sts per inch than 5¼, but you really have to do a sample - of course that's not really like a swatch you know....
Then divide your sts per inch into the sts given for the smaller size and see if that comes out to the measurements to fit you.
sue- knitting heretic