Ok for starter your CFL will be the best thing to veg your plant, HPS are more for flowering, but the one CFL one do jack to 4 plants. Using CFL's bush them out more and if you place them 2 inches above the plant won't stretch and therefor have good stem growth too.

Your problem with yellow veins etc. will probably be from lack of phosphorous or general minerals. Try to give them a little but definitely not to much, you don't want to go down that route trust me!