Sorry hadn't seen u posted while i wa writing!! I guess these days are DIY days for everyone!!Im loving the :extraction" unit haha!! Yes it will be good for seedlings but you will need better space as you go,quite soon actually!!
Anything that yu start with and work with is the way to go if you reach it's full capacity! DWC/RWDC is the best feeding/growth style...My Drip/Irrigation system provides a medium for hydro and top-feeds the system..Soil buffers ph and nutes better than either of the previously mentioned and stand as good ground for training the plants as their base is well...in the medium!!
Hydro will come packed with extra needs,Ph/EC meter,Water Temp meter (or a combo of the 3),Water tank heater,Pump for water,Air pump for bubbleponics.Also hydro has Hydroguard to use for the roots and requires more attention to dosing,cleaning and ofc is less forgiving out of the ways to cannabis!
It also provides bigger/faster growing plants people say,i can't speak for myself on this...I believe RDWC is the best way to go if not DWC..
Did i mention inital setup costs? You did ask about the medium/grow style..What about Lights?
If you get HPS,MH the initial setup will be more expensive so i would go for soil (unless u get something like my drip irrigation which i dont recommend)
If you want to dial it in once and for good..you have the budget for it..Go get Leds and DWC/RDWC setup!! I would be happy to help you setup that list of yours!!