I completely understand what you mean about taking it easy. As sexy as deep freediving is (I presume something to do with machismo), there is no reason to push it as a beginner. But freediving offers a much more engaging, peaceful view of the UW world, and allows you to get closer and more intimate with your prey. Also evens out the odds a little...
Obviously if you do take a spare air with you while freediving and decide/need to use it, keep in mind of the different physics (Boyle's law, Dalton's law, Charle's law etc.) involved with scuba. I guess it's not a bad backup for freediving but I would personally rather shed the weight and just make sure I freedive within my physiologic limits. Either way, once you get comfortable freediving (by comfortable I don't mean going to 100ft) you'll notice a more intimate connection with the sea and the creatures. You end up being more in tune with your surroundings, instead of fiddling with hoses and buoyancy etc. Also much quieter and more peaceful.
That said, don't misunderstand, I enjoy a good scuba dive too. Enjoy yourself Kirk and good luck with your new endeavor.
Alex
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Panthalassia 
"Over the margins of life comes a whisper, a faint call, a premonition of richer living which we know we are passing by. Strained by the very mad pace of our daily outer burdens, we are further strained by an inward uneasiness, because we have hints that there is a way of life vastly richer and deeper than all this hurried existence, a life of unhurried serenity and peace and power."
THOMAS KELLY
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