Crochet jacket in progress...or not

During the weekend I started on the crochet jacket. I'm using the yarn I bought at Nysta and I'm using this Garnstudio pattern. It is fast and it is fun.

My current concern is the size and also if the pattern is strange in sizing between the back and the front or if it is my changing "gauge" as I go along. The left front is a lot more then half the size of the back. I also realized that the yarn is not enough so I've mail ordered from Nysta the last 5 skeins. I hope this is sufficient.