Olympic Distance - Do I or Don't I?

You'll do fine.

I just did my first Olympic 2 weeks ago on very similar training distances to what you describe.

Get as many OWS times in as you can. If it is your first OWS tri then just start at the back and let the group get moving before you start. As things thin out you can swim past slower swimmers and you'll be out of the way of faster ones fighting for position at the front. 15 to 30 seconds on the swim is totally worth staying out of the mayhem of a group start for your first time.

I say go for it.  I did my 1st Oly last summer after about 2-1/2 months of training up to similar volumes to what you mentioned.  Everyone's different, but I bet you wouldn't have a problem.  Enjoy!

Your lack of OW experience is a bit of a red flag for me.  I'd also like to see you get a sprint OWS under your belt before taking on an Oly. 

That being said, I think you can probably finish the Oly, but you need to approach the swim with the idea of swimming it within yourself at a "comfortable" pace, not racing it.  Go out too fast, spike your breathing & HR, and you're in for a long day.  Cruise through the first 1K, then see how you feel before trying to push your pace.

Get in as much OWS practice as you can prior to your race.   You didn't mention it, but you also need to spend some time practicing your sighting.

Good luck with whatever you decide to do.

Mark

Kill it!!  The OWS will seem a little intimidating at first, but just keep clear of the traffic.  Start on the outside away from the first turn and it will open up for you.  Also, how else do you know you can do it until you DO IT!!

I love the Olympic distance.  The swim is a blast and it's short enough to go hard, but long enough to really settle into a nice smooth stroke. 

If you ask me, the volume you are doing will easily get you to the finish line.  Not sure of your goal time (I wouldn't put one out there on your first one), but you seem to be asking the right questions and have the right level of tri experience.... event if it's "just a bunch of sprints".  :-)

I agree, you can do the Olympic no problem - you'll be happy with your decision.  I think a lot of people do there first Olympic on less training - I sure did.  I do remember needing to switch to the breastroke a lot - I couldn't do all freestyle as I never really solidly put in many ~2000 yard swims - and none of them open water.  If you can do a little more open water - not at race distance but maybe 500-1000 yards, that I think will be your biggest bang for your buck before race day.  

Good luck..make sure you get some tapering in the next 10 days if you have been training hard up through now.  You want to go in chomping-at-the-bit.