advice setting up an auto feeding system DIY

i Have been hand watering since i began growing however over time my setup has gotten bigger and bigger and have just harvested so was thinking how i could inprove my setup /system and one thing i decided was the hardest part of last run was watering the pots at the back of the tent having to move plants out and about to get in there i was thinking of auto pots but are quite expensive and then thought about having a water pump connected to a 200 litre water butt on a timer and run pipe from pump to every pot and have timer on pump adn with practice could get timing so it was on long enough to feed them now i have some questions and would like some advice if any one got any knowledge image just a quick sketch

is 3000 lph decent enough ?
what tubing should i use ?
will the plants close ro pump recieve more than ones further away ?
what would be the best way to run tubing ?
is one pump enough ?

Yeah, the farther plants will get less doing it that way.

This should give you an idea.


- Jiji