Please help with my Kit and FastFermenter

[mrchaos101]

I am using my first island mist Black raspberry kit. I am going to do this in the FastFermenter. I have pounded YouTube HARD trying to figure out how to do kits in this thing....

I have it going now with the 1118. In about 5 days it should be ready to rack...

Please advise how you would do this with out using a carboy. One video I seen by the make left a BUNCH of head space at the top... I thought this was not good? What if I fill some soda bottles like 1/4 way with water. Clean and sanitized them... and floated them at the top to make the volume increase? I should I worry about it?

 

[DoctorCAD]

Step 1, forget EVERYTHING you saw on youtube.

The Fast ferment traps CO2 at the top, not oxygen, as far as I can tell. Oxygenation wont be a problem. I dont own one yet but I understand that they make fairly good wine.