creatine and whey...what other supps to take?

[sparknote_s]

I have never used any supplements before, so I will be starting my first 'stack'. I will be using:

Omega Sports Cre Ethyl Thunder (CEE caps)
Optimum Nutrition 100 Whey Protein

I will be taking those two for sure, but have heard lots about:

nitric oxide boosters (basically lots of arginine?)
HMB
Glutamine
EFA or something (like flax seed oil?)

I can really only afford one more supp after the creatine and protein. What should it be?

NOTE: I already take a multivitamin regularly.

 

[LAM]

I can really only afford one more supp after the creatine and protein. What should it be?

NOTE: I already take a multivitamin regularly.

fish oil caps (omega 3's)

 

[sparknote_s]

could you also explain why?

 

[PrincePaul]

Good for your heart, and contains Essential Fatty Acids.