DanielDoll: you will love var - my gf is on it right now and put on some good weight with it. My gf started training with me last year - she was 133 when I got her. She put on 15lbs all natural and then we added var (10mg / day, but it is from Mexico, so..) - she is right now at 161 and going strong (at 5'8").
Couple of points - bb is harder then rocket science, because my rocket is different from yours -
so
1) Var does cause a little bloat for her - but do not adjust the diet - it is just water retention, you will drop that when you come off
2) Keep your protein and fat high - you need fat not to waste protein - if you want to get more scientific, get some flaxeed oil or some Udo oil to add to your shakes - you will love that stuff
3) Keep your carbs clean, but that means different things for different people - check how your body reacts. I love brown rice, but I get fat on potatos. My gf prefers fruits, etc.. but clearly stay away from starches and high glycemic ones
Good luck and keep your calories high and take your measurements every week.