What do you eat?
You know - food, it's what's for breakfast, lunch and dinner.
You said: lean muscle with definition
You profile has: Well images of lean muscle and definition. That is you, yes?
Lets look at your body realistically. You are tall 6'3" tall, chances are your limbs are longer than your torso. That means that thick muscle mayn't be in the cards for you.
You are slender - almost to the point of 'thin'. Chances are that your ability to build muscle is going to require a lot of hard work. If you are naturally prone to being slender, then most likely building muscle mass is going to be difficult. Building muscle strength may actually come easier for you than others.
Your body type is going to play a huge roll in what you can realistically expect to reach in the way of goals.
Google the words: Body type.
There is this site: http://www.bodybuilding.com/fun/becker3.htm
to start you off with. however there are many others that may go into greater depth on your body type and what it means and how it could affect your goals.
As for supplements. The very word supplement means it goes along with... in this case it goes along with your diet. Without knowing your diet and what your exact goals are, its going to be hard to say yay or nay on any of these.
The person who you should be talking to about your supplements is your doctor. Hopefully you have one who is familiar with both your personal history and your family history. I do not know if there is a history of renal failure in your family or not, if so then I would steer clear of Glutamine and creatine.
There are natural sources of Glutamine: Dietary sources of glutamine include plant and animal proteins such as beef, pork and poultry, milk, yogurt, ricotta cheese, cottage cheese, raw spinach, raw parsley, and cabbage. These are better (and actually cheaper) than dosing with refined supplements.
Creatine is often found in cases of renal failure. Creatine has been found to be a fairly reliable indicator of kidney function and is often tested for in cases of suspected kidney trouble. Too much can be a 'bad thing'.
I am only picking on renal issues, however different stuff can impact preexisting conditions, even those that are not currently or have never been present, a latent issue can be brought to the front.
Assuming all you want is a little more muscle and to lose a little more flab (although your pictures show little flab at all), I would stick to dietary sources of nutrients.
Protein may be one to consider IF you are have trouble putting on mass. Which I suspect your body type may actually be one that will be difficult to put on muscle mass. However dietary sources of protein are better for you. Again, I have no idea what you eat, how often, how much, so I do not know if protein is really needed.
If you are having troubles reaching your goals in a realistic time frame, the problem may actually be your workout. I note that you are using weights 5 times a week. It may be that you require an extra day of rest between working out a muscle group.
There are lots of sites that discuss this, arguing that more days of rest work better for some people.http://www.google.com/webhp?hl=en#hl=en&sugexp=ppwl&cp=27&gs_id=47&xhr=t&q=3+days+of+rest+between+workouts&pf=p&sclient=psy-ab&safe=off&site=webhp&source=hp&pbx=1&oq=3+days+of+rest+between+work&aq=0w&aqi=q-w1&aql=&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=a686e28799f6b6d7&biw=1215&bih=677