CFL's are good as supplemental lighting for sure, the 250 only has about 3-4 feet of light penetration so the CFL's would provide lighting for the lower nodes/buds.
Glad you like the HPS Wegotit, even with the 16k lumens you had with the CFL's, the HPS has better light penetration than the CFL's so I think you'll still be impressed regardless of lumen output honestly.
3-4 plants under a 250 is fine, especially if you plan to put in supplemental lighting, just watch your heat and humidity.
WW is a good strain, I'm actually smoking on some WW as I type this up lol. Nice smoke, nice taste and good high.
Can't wait to see some results and pictures
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