How big will these plants get?

Hello I have just transplanted my plants on day #11 from red solo cup to 1.75 gal pot. I want to keep my plants small as possible. I may also want to add that I topped them on day #8. They have no transplant shock and are healthy. I just turned them to flower after 24 hours adjusting to there new home. How big will they get???? Screenshot_2016-08-12-18-16-05.png Screenshot_2016-08-12-18-16-00.png
 
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