How many plants in 4'x2'x5' tent?

Like my title says, I'm wondering how many plants I could fit in my 4x2 tent? ill be doing a scrog with ff soil, 600 watt hps. I am looking to get max yield out of one harvest in this tent. I'm still unsure about what strain I am going to use, so if you have recommendation's on a strain that would work good for this set up that'd be cool too.
 
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