All babies should be under cfl, you want the lights close without causing any damage. A lot of new growers get caught up in 2 grow stages (Veg and Bloom) but theres really the 1st stage which is seedling stage. You should very much use MH for veg, however if you are comfortable with a "dual purpose" bulb thats definitely your choice and I'm sure you will have just fine results.
I have had 100% success with seeds. The keys to success are light, moisture/humidity and pH. i like to use small greenhouse enclosures so that i can put the CFLs on top of the dome. no more than 12" from the rockwool that i start my seeds in.