430 super agro to 1000 super hps??

I have 2 plants 4 weeks into flowering under 430 super agro.I recently purchased a 1000 watt system with 1000 watt super hps.My question is if I take the 430 out and run the 1000 will this have a negative effect on my two plants??I HAVE 14 Other plants I am going to flower along with the 2, thus the reason for upgrading to 1000.

only effects would be fatter denser happier plants. possibly light burn but highly doubt it. Just keep it up high and lower once they get use to the improved lighting.

thanx just wanna be sure before i do it