I'd even opt for 1/4 strength and possibly build up to 1/2 strength and stick with that. Some people even just stick with 1/4 strength throughout the grow..

your plants will respond differently to different nutes, so start off with 1/4 strength for a few waterings, then as your plants get used to the nutes, move up to 1/3 or 1/2 strength and carefully watch for signs of nute burn.