My LO is also 9 months.
Wake up 7:30/8
First nap 11:30ish-usually 2 or 2 1/2 hours
second nap: 4:30 or 5:00--usually an hour (sometimes 45, sometimes 1.5)
Bedtime 8:00
With my LO, activity time after the second nap does not effect bedtime at all. Sometimes, if he does sleep for 1.5 hours, we just move bedtime back to 8:30 or 9. He usually will sleep in the next morning.
So, a long morning nap and shorter afternoon works for us. It's worth a try!
As for the standing in the crib. My LO started that around 7 months and he really couldn't get himself down. He'd just tumble over, hitting his head. It was a pain! I always put him in a sleep sack, but he could still sit up, crawl, and stand up in the sleep sack! For a few days, I'd let him stand for about 10 minutes until he started fussing. Then I'd go in and lay him down. He'd cry sometimes because I went back in and left, but then he usually went to sleep. Now that he is 9 months, he still stands in his crib frequently, but I just leave him. Usually he goes right to sleep in 5 minutes, but sometimes I'll here him for 15 minutes. I know he can get down, so I just let him stand until he decides to lay down and go to sleep. If he was crying, I'd give him a few minutes to do that too.