I decided to change it slightly since my yarn was finer than the Regia yarn called for. I cast on 72 sts (instead of 64) for the ribbing, then increased to 75 sts before starting the pattern which needs a mulitple of 5 sts. I also changed the pattern design just a little to this:
Round 1: as stated;
Round 2, 3, 4: Knit;
Round 5: as stated;
Round 6: Knit.
The yarn is a Manor store brand (department store in Switzerland). I loved the heathery green and the fact that this yarn doesn't split and is nice to knit with. It's the first time I've used this yarn but I like it well enough to get more in other colours.