I don't really get what you're trying to say.
Watts are watts, energy per time unit. 100W power draw by the CPU equates to more from the wall socket only because of inherent losses from inefficient voltage conversion.
Watt = unit of power
Amp = unit of electrical current
Volt = unit of...
So you have access to a CNC mill? Tooling will be your biggest expense if you don't have tools already available to cut the features you want (which may be the case, if you want micro-channels or something of the sort).
As far as diagrams go, what kind of block are you wanting to make...
It's been discussed before, try searching for parallel pumps or pump redundancy...
Running them together inline is probably not a good idea. Replacing your 60gph pump with a larger one would be a better move. I can't suggest that you do so with the VA 1300 though, because I've gone through...
Fuel filters are also meant to be exposed to fuel, and not water. It's possible that there are metal parts in there that could rust or otherwise corrode, negating any benefit and probably worsening your problem.
Then you missed this part?
(9) No SHOUTING (Posting in all capital letters) Its hard to read and just plain rude and annoying.
Also, wait longer than 3 hours (like 24 hours) to bump your thread - this isn't live tech support.