Freedive first, scuba later.
Don't forget that you can also get bent freediving alone. THere are dive tables for freediving. They don't have deco stops built into them, but the do have surface interval requiremnts. The deeper you go, the longer you nedd to stay on the surface between dives. 2:1 is a good rule of thumb to start with. A 1 minute freedive menas a 2 minute surface interval.
If you want to snorkel after diving you should be OK. Max depth should be less than 10'. If you are thinking aout pushing it you should know that freediving DCS is a type II neurological hit. THat means it is a lot nastier than a type I pain only hit.
Hope that htis helps.
Jon
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Imagination is intelligence with an erection. - Victor Hugo
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