Second grow 250w hps skywalker kush any suggestions appreciated

I will have 4 skywalker clones in soil under a 250w hps. Im wondering how much will these girls yield? Are they looking good? The pictures below show them under a 250w mh that have been vegging for 5 weeks.The last two is an OG kush from seed and the other is an afgooie clone. I will throw them in 12/12 this weekend and will post up more pics. Any suggestions and comments will be appreciated.
 

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