Am I ready for an Oly?

The swim might be pretty tough.  An Oly swim is 1500m (~1640 yards,) and so longer than any of your training swims.  I just did my first Oly and even though in training I have been swimming between 2000 and 3000 meters in each workout, the swim still felt pretty long.

I think you could finish an Oly, but wouldn't count on getting into the MOP (but that is also dependent on the race and who else shows up for it). 

I'd take a look at some of the training plans on the site and compare that to what you do weekly.  That might give you an idea of where you are.

IMHO, I agree with Bear.  Especially if your goal is to finish in the middle of the pack, which really ought not to be your goal for your first Olympic. 

Without knowing your paces for the yardage you describe, I have no opinion whatsoever about your placement in the pack.  If you want to do the Olympic for giggles, then sure, go for it!  Unless there are problems with the terrain (first open water swim, or more hills than you are accustomed to), you will likely finish.  However, if you want to perform closer to your full potential you do need to ramp up the volume in all 3 disciplines.

Why not start using the training log here to track your sessions?  That way if you have specific questions later, people like the bear can go and read them before making a reply.  Good luck!

Not knowing your run background, I would say that your run volume is low to be ready for the Oly distance. I'm definitely not an old pro, but I have finished two Oly tris and two Oly-length Du's, all with less than stellar performance (read very BOP) on the final run leg.  Here is the relevant advice I have received (and am currently employing) from one of the coaching types in my local club:

"To help your triathlon running you need to be able to do two things, know you can
run the distance, and know you can perform for your anticipated race
duration...they are two different things.

To help with the run distance, I would slowly ramp your running up to
the point that you can run at an easy pace for about 1.25 - 1.5 the
distance you are planning on running during the race.  So for an olympic you
should be able to get to the point where you can run for 8 - 11 miles (or a
comparable time if you are trail running or something).  To get used to the
 performance distance, I would use the bike to acclimate your body to
the duration of the event....so if you think your race time is going to be
 3 - 3.5 hours, go out for a few rides of 3-4.5 hours in length, and you
can also toss in some short run bricks once in a while where you go for a 2
- 2.5 hour bike and a 15-30 minute run right after.  I observe that these
 kinds of workouts are pretty sticky, physiologically speaking, and you
only need to do them once or twice a month to see the benefits...for example
you could alternate a long run and a long bike every week.  These would
probably help your running strength at the end of a race."

Your mileage (so to speak ) may vary.

Well said ScottNM!  X2.

My first two Oly's I was way under-trained for the run and had issues on both.  I've since done a HIM and a Long Course (1.5xOly) tri following training principles Scott mentioned above for these distance events. IMHO you need to become a better runner to finish MOP.  BOP due to the run hurts!

You can do it though if you don't kill yourself on the bike.  In the next 4 weeks you should do an Oly run focused mini-training plan.  That's one good build cycle with a active recovery/taper week leading into the race. Get your long run (Z1/2 or "easy" ) up,  using your 45 min easy run duration & 10% rule, you can be doing ~60 minutes in the next 3 weeks no problem.  Don't worry about building speed right now, focus on building your run stamina, pace (aka speed) will come over time. 

So what are your long term goals?  How do you track your training?  Do you know about HR training?