If you're thinking of running a 260w kit at full power in a 2x2 tent you will probably face some problems. The 135w kit is a good choice for a 2x2
For a 3x3 you could get the 260 xl kit and add some strips to top at 360w and get a better coverage
I am going to start my 2nd run with 16x EB2 (2ft) strips. Tent is 3ft high (there is also a carbon filter inside).
I was worried that 120-150w in a 2x3x3ft tent could have been on the low side but got a 1.3-1.5 gpw ratio and I am impressed, willing to see if the reduced gap between tops and...
If you don't need speed control it is pretty easy to power them.
Same to what we do with leds, check operating voltage and current and find a suitable driver. It is common to use parallel wiring. Usually they are 12v as already said
There are 0.5-1gal fabric pots or plastic bags with a diameter of half ft (6-8inch).
16 plants in 4sqft means about 64plants in a 4x4 tent.
Growing in a coco/perlite mix let you use smaller pots than soil
Take your total wattage and divide by the suggested 30w/sqft and you will find how big your grow space could be
1ft eb2s have a max current of 700mA, right? Btw they shouldn't have any problem since bridgelux usually downsize their max