Made some good progress today. Buried both posts, mounted the angled 4x4, bought a longer carriage bolt, etc. We also began finishing work on the picnic table, I filled the screw holes and my wife will be sanding it while I'm at work. Might even start painting it tomorrow. Slide is much more stable, so is the swing set. I'm happy with the movement in the slide, but I think the tower could be a bit more stable. I'm pretty sure the X brace inbetween the chalk boards will take care of that. Here's some pics!
Slides post, all buried and what not. I soaked it a bit to help the grass regrow (same top piece of dirt):

Finished bracket, rounded edges and what not:


New swing brace, hard to tell this goes about 20 inches into the ground.


Swing's braces as it sits now. I'll me getting a L bracket a little later:



Picked the wife up some Tulips (Better than roses on a piano), and Zoey loves them:


I have to sure up the brace on the slide a bit more on the structure side. At some point something I did bent it, so I'm going to move it and put a brace to the ground. After that, I'll do the L bracket, then it's time for the chalk board(s). It'll get done someday.