Where are you sourcing these?
Not really interested in AMP though, caffeine is enough stim for me + it's a vasoconstrictor.
Also, I feel I need something for flavour so I was also considering the Bulk Nutrients Amino flavouring but surely there is something cheaper.
I feel you have criminally under dosed Citrulline Malate, I believe it needs to be at least 5g with many studies using 8g.
(Source)
I was under the impression that Agmatine and Arginine are just worse forms of Citrulline Malate and should be avoided in conjunction as they use the same transporters.
(Source)