I'm Crazy!

I think I'm crazy or have really high physical aspirations.  First, it was wanting to climb Mt. Kilimanjaro before I turn 30, then it was the half marathon (quite the jump in level of difficulty), now I'm considering doing a triathlon (for some reason, I keep sticking an extra "a" in the word triathlon).  I think I could handle the biking and running part easily.  Whether or not I could do them sequentially is still in question, but isn't that what training is for?  I've no idea what my swimming prowess/stamina/endurance is.  I can swim, but can I swim efficiently?  And by efficiently, I mean do I have the right technique or look like I swim correctly or swim with the least amount of energy used.  It's like when I go to the gym to run and I see these people (mostly women) who run like they are rag dolls.  It's like legs and arms are everywhere.  I'm not expert runner, but I feel like that's a lot of wasted movement.  It's not very "lean" if I want to bring in some work training into this.  Also, I think they look stupid.  Anyway, maybe I'll start substituting swimming as my cardio at the gym.  There is an indoor pool, but then I'd have to buy a more sporty swim suit.  I doubt cute triangle type, string bikinis are suitable for "long" distance swimming.  It's "only" a half mile.  Maybe I'll mix things up a bit at the gym and bike/run instead of just run.  I have been meaning to mix up the cardio routine at the gym, but never got around to it.  If I commit to it, I'll have to.

Then it raises all sorts of other questions.  Do I need a special bike for the biking part of the marathon?  I don't want to spend money on one when I have a perfectly good bike at home.  It's a road bike too.  Am I going to be a complete idiot during the race?  This whole transitioning thing that I've briefly read about is kinda scary.  And biking competitively, what is the drafting rule?  I'm gonna be the douche that causes the big crash in bike races because I didn't signal correctly or something.  It's very intimidating just thinking about it.  I might just have talked myself out of it, but I'd be more inclined to do it with someone else.  I'm such a wuss.