LONGECITY

I have been feeling a bit blue due to the lack of sleep as of late.

I am wondering if enhancing my daily mood will enhance sleep and then feed a positive cycle going.

Here's my stack so far:
 

St. Johns wort (990micrograms)

100mg 5htp

0.25gram melatonin (slow release tab quartered) 

I also take these as needed:

1g Alcar

700mg Choline Citrate

580mg Aniracetam

B Complex

25-50mg Modafanil (every 2nd day)

700mg ZMA 

Does any one see negative chemical interactions between my stacks? I hear that 5htp shouldn't be taken with St Johns wort, but also I hear the contrary.