My question involves a speeding ticket from the State of: Washington

I received a ticket on Feb 25th... so about 11 days ago. I've been reading and researching trying to figure out my best choice. I haven't done a formal discovery request, but was able to informally obtain the information from city hall. Looks like I need to go back to get the radar cert information. Will do that tomorrow. I found out today that the judge typically gives ticket reductions even if found guilty, so it seems like I should contest no matter what; however, I'm looking for some solid argument points.
Here's the scanned info:

Ticket
Officer's Statement
Statement (last page)

On the Ticket:
1) IRLJ rule 2.1 (b)(3), was not followed in regards to providing information to the defendant in regards to the vehicle style. He omitted style, and color.
However, 3.1 (d) seems to indicate the above rule might not make that much of a difference.

2) There is no cross street mentioned.. only MP BLOCK 800. I had just left a house less than half a mile away from where I was pulled over. I originally thought he was stopped and pulled out behind me... but if he was going the opposite way, that potentially means that distance is even shorter??

On the Officer Report:
1) Officer did not indicate unit was tested nor the results of the test, only that the unit was calibrated int and ext before and after the stop.
2) Officer does not indicate what type of calibration was used: Tuning fork vs button calibration.
3) Officer does not indicate who performed the calibration.
4) Officer does not indicate training or certification in calibrating or use of the radar.

5) Issue with Officer's Testimony: I did not indicate awareness as to why I was pulled over by the officer, nor was the question posed.
He said, "I clocked you going 39"
I said, "Oh!", which is a far cry from admission of guilt or awareness
I explained I was late and wasn't paying attention to my speed. However, I didn't confirm or deny that I was speeding. His report seems to indicate that I admitted to intentionally speeding. When I saw the officer behind me, I checked my speed and it was under 35. My wife was in the car with me, so she can confirm this.
6) There was another vehicle in front of me when I was pulled over.
7) Again, no cross street mentioned.. only MP BLOCK.

Other possibilities:

Was the area a speed trap? I'm still working on this one. If the Engineering and Traffic Survey is older than 5 yrs, I may be able to contest that it is a local street or road on the point that there is more than half a mile between stop signs / traffic lights on the particular stretch I was on. Everything else about this is stacked against me though. I think the area would be classified as residential (although it has mixed business).

Can I argue the safety of my speed? Possibly. Not a school zone, perfect weather conditions, not much traffic at all (everyone at work and kids at school). I was not tailgating the car ahead of me. If anything, I was matching their speed. There is a retirement home just ahead of where I was pulled over though.

Beyond this, I don't really know if I have anything. I'd love to hear if there are any other things I can argue.

Thanks.