Legal Cannabis Medical Grow

[WeeGogs]

i am changing from soil (good), then i tried coco (better), now to hydroponics, i want to start right away, the only issue i have is, would i be better with an nft (100mm) pipe system, or a flood and drain 2 litre bottle system.
(limited space available)
and would i be better using 32mm pipe or 40mm pipe, and white or black in colour for algae prevention.( i can get black supplied at extra cost ) to connect it all up.
Thanks G.