"cutting up"

I am about 5'10" and maybe 175-180 lbs with an extremely tapered build. My shoulders are basically really big for my height/weight and my waist is barely 30-31 inches. Anyway, just thought I'd give some basic info. I'm looking to cut up for spring break and this summer. I'm currently fairly lean, and while I haven't checked my BF lately it was around 10-13 last time I checked. I am starting to do hard-core cardio every day and I take the recommended dosage of xenadrine. I also have been lifting in the gym about 5-6 times a week, but I am thinking about maybe cutting back on that and doing more of my cardio outside now that it is getting nice where I live. I don't eat meat, but I eat egg whites, Fat Free cottage cheese, and soy products constantly. I also try to drink a lot of water and avoid most unhealthy foods, but because I haven't really been trying to lean down over the winter I've been allowing myself a crazy night out (my body weight in beer, well maybe not that much lol). Anyway, if any of you who are serious body-builders or just particularily knowledgeable could give me some advice I would really appreciate it. I need to know things like should I start working low weight high sets, should I stop lifting as much, should I start doing unsually high amounts of cardio, should I run three miles before I go to bed every night...tricks of the trade. Gratias.

Thanks so much guys, here is what I have started/am starting. By the way, I do eat fish; I used to be vegan but now eat fish and dairy products for health (and ego i.e. bodybuilding) reasons. 1. Cardio everyday instead of on an alternating schedule. Instead of alternating whether or not I do cardio on days I don't lift, I am simply going to alternate between more and less cardio. Basically like at least twenty minutes on days that I lift hard and do abs, but on days that I don't lift as hard I am going to do more. When it is nice outside I have no problem getting out and running several miles or approximately 20-40 minutes depending on how many miles I run (usually 2.5-5); I have been doing this for a long time and it has always kept me very "healthy". My problem is what to do on the days when I cannot run outside for one reason or another. I live in Missouri and our weather is iffy at best right now, so this is fairly often. When I try to do cardio at the gym I have trouble figuring out what machine to do etc. I like the stairmaster, and I can do it on the highest level (20) for 10-15 minutes. Should I set it a few levels lower and aim for thirty? Should I run on the treadmill even though I hate it, lol, ? 2. I also started trying to cut my carbs, but I have never done this before and have some questions. Is Milk too carb heavy? What about cheese (in moderation, like on my egg whites as a treat)? What kind of fruit can I have/should I avoid? Should I drink anything other than water? I'm fine with just water, but would like to know if I should be drinking some sort of juice. How big should my breakfast be? Compared to other meals? Random Questions: Cardio before, after, or before and after lifting? How many reps is a good high rep/toning set? If I can do say 12 of a single arm curl with 45 lbs, how many lbs should I lower by? Should I do twenty with a 35'er? Or like forty with a 25'er? Are there any foods I should absolutely avoid or any rules I should absolutely not break? (I am sensing no-carbs after evening is one of these) Thank you all so much, I appreciate it. Adam