<span class="link_user">@gorillaz</span>, depends on your LEDs, some have "veg spectrum" and "bloom spectrum", but yeah i would say start them off on LEDs or even CFLs, then slowly introduce more light as the plants need .
<span class="link_user">@CRiSPrGrow</span>, thanks for advice , so you suggest to start with LED and then ,after some time in vegetative stage add HPS , am I right ?