Thanks to all for the straight talk and advice. I know the LEDs aren't optimal, and would prefer to go with the HID set-up. But, I think I'd sweat it too much while on the road. Surely, if I pack enough LEDs in there I can get a decent haul. So here's a couple of pics, they didn't exactly blast off while I was gone, but they are growing nicely... The secondary growth has multiple nodes now, but everything is so tiny....
I think I'm going to bite the bullet and buy 2 more 240W LED lights and finish the run as planned (actually the plan was to only buy one more, but wtf 3 will fit).
Also, for those interested, these Blumats are cool - they are highly efficient so far. I have a cheap SunLeaves multimeter that you can see in the bottom pic. The meter is decent, but other than PH, the units it reports in are just graduated values, but handy nonetheless. For example, the "moisture" sensor reports on a scale as follows Dry+ Dry Dry- Nor Wet- Wet Wet+ so not real scientific, but when I push the meter down in the pot, the top 1 to 2 inches are Dry or Dry+ then it goes through a steady progression through the next few inches to Wet or Wet+. And I never see any water in the overflow trays, but plants seem to be getting plenty of water, the sawed off little runts