Washdown pump & scupper help

[bigeasy1]

A couple of questions, for anyone with a washdown on a 23 with floor scuppers.
I have a Shurflo wash down that I'd like to install on my Tsunami,and would appreciate any advice,as to where i should install the pump and seacock.
My thoughts are either in the bilge area in front of the engine (it's a 350 I/O),or amidships forward of the fuel tank.

It's only a 52 gallon tank,so i have plenty of room forward,of the tank compartment.The hull bottom forward of the tank, is accessible,as i cut out the rotted bottom of the compartment that runs front to the cuddy.
I plan on leaving it accessible by having the bottom floor of that forward storage hatch removable.

Also wondering if the water will drain out the floor scuppers easily when trolling,or are they as much of a nuisance,as i hear about.

I'm thinking about maybe putting in some through the transom scuppers,while i have the back panel off,making the transom accessible.
I was thinking of going horizontally with a thru hull fitting just above the thru deck scupper,and out to the transom to a pair of rabud ping pong ball scuppers.
The problem,may be that i won't be able to have them above the waterline,it looks very close,and i can't really tell where the waterline will actually end up.

Here's a few pictures showing the engine compartment.and forward hatch areas where i could put the pump,and the last picture, is where i could run the new scuppers out to the transom.
I have the back cap and rear panel off so now would be the time to do it.

Any thoughts,or comments would be appreciated.


Engine compartment,& inside of transom with top cap and inner panel removed



Engine compartment.



Compartment forward of fuel tank,shown with the floor out



Same compartment,with the floor in,and looking towards the stern.




This is where i was thinking of putting in new horizontal scuppers.