When I look at the Fluence site, the latest top shelf Spyder 2 series and X series range from $1395-$1600 USD. You can build very close to the same thing in an uglier package for about 1/2 to 1/3 the price.
Read out my posts here and the following ones later in the thread: What are the best led lights available currently? - #15 by guest They should give you the answers you’re looking for. LEDGardener.com is a great site for this stuff, but you gotta read read read read. Then watch some Youtube tutorials from Growmau5 and GreenGenesGarden - they may be talking about LED COBs instead of strips, but the principles of wiring and building the fixtures are the same when you use LED strips.