Thanks for your responses everyone, I really appreciate the feedback!
So it's clear from your comments that extra buoyancy is a must with this Ike setup. I got 2 sets of arms by Ikelite - its obvious that these aren't a favorite amongst you guys, but I am on a budget and they were a good deal so I'm stuck with them for now. What kind of buoyancy options are available for Ikelite arms? I've looked on website like backscatter and blue water photography but I can't seem to get a clear explanation as to what would work with these arms... the Stix looks like the most efficient and practical solution but do they work with Ikelite??