My Forearms are on Fire, and my Shoulders feel like Mush

Warm Up:
Reverse Tabata L-sits

8 minutes AMRAP
3 Turkish Get Ups Left - 35lb kb
3 Turkish Get Ups Right - 35lb kb
12 Push Ups
18 Situps
Total: 2.5

Workout:
20 minutes AMRAP

30 squats
10 chins
15 Barbell Push Presses - 65lbs
20 Kettle Bell Swings - 45lb kb
Total: 4.5

I enjoyed today. I loved the warmup, but I got a fun little surprise when I went to do my pushups after the TGUs. I went pretty heavy on them, so by the time I got to the pushups my shoulds were fried. I think I did only 2.5 rounds of these, with poor pushup form.

Liked the workout.
Squats: I started with squats, because the pullup bars for short people were full
Chin-ups: Good
Push Presses: 65lbs was heavy to push press in the midst of all of the other exercises. I could bang 10 out in a row, but then I had to rest to finish off the final 5. For each round.
KB swings: Blew. 45lb KB swings are really heavy. They make my forearms burn like the sun burns my skin. The pullups only compounded this pain.

I also did a little muscle up work today before class. I am working getting up on the rings. I don't have any problems pressing from the dip position once I am there. My sticking point is transferring from under the ring to on top of the rings. I started out today doing jumping muscle ups. I can do those fine. I tried then only jumping from one foot. I was fine with doing that too. I am thinking I may try the transition without doing the kip but hanging with my elbows bent at a 90 degree angle. I'll try that tomorrow after working one or two jumping muscle ups. I have been trying the new grip on my pullups, so my palms are facing me. I don't know if it's making a difference, but I miss my old grip.