few questions about hydroponics

could somone give me some advise on hydroponics?
I am just getting into growing hydro, and i am still building my setup, its 30" tall 17" wide and 30" long , The goal is to get a harvest every 2/3 weeks running ten plants and i was wondering how i should go about constructing my setup id like to keep a small or even external res. because it will waste growspace.

So you have your dimensions and you're asking someone else to tell you all the rest? You need to do at least some of your own research before asking questions. That's what the stickys here are for.

Here is a DIY Tutorial:

Roseman's DIY Bubbleponics Tutorial - Marijuana Growing

not really looking for somone to do any work, just kinda need to know what hydro setup i should go with. One that works but uses minimal room.

You just have to go here,
https://www.rollitup.org/grow-journals/234683-my-first-grow-diy-dwc-26.html
to Post # 258 and look at the pics.
You will find pics of a seed grow started in plain DWC, no feeder tubes, and comparison pics of seeds started at the same time WITH Feeder tubes and water pump, that he did as an experiment.