Bro, don't worry, the stuffs floating are just some small pieces of wood (I think so lah...) or those soil with some air packets in it... You can simply remove these floating particles with your hands or a net...
As for the settling, it should take less than 24hours for the water to clear (based on my own experience of using Gex soil also..)... Try not to disturb the soil once you'd poured water into the tank [Hence, you need to plan how you put in your stones/driftwoods & plants into the tank before you add water...] as this will cause the cloudiness again... but it should clear away in no time with your filter running... Don't worry bro, enjoy!!!
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