That works. Last semester was fairly crazy so I'm not surprised I missed some of the stuff. 
If you want to incorporate Jen leaving to visit her ex (was the Doctor coming along) and Ten just arriving at the time into your first post that will work. 

But yes - we can start. And then life will get crazy. lol Hopefully not.

As for the Crossover:
Having Eleven and Clara show up would be a bit interesting. The two were pretty good together. 
However, having three Doctors could result in a crazy paradox - even though it is another universe. 
But then again the entire season is being planned as more light/fun vs. serious.

However... having nine and ten meet - that alone might cause some repercussions along the timeline that is unexpected. 

I have no problems introducing Eleven and Clara into the mix. However, it might actually be better to not include them. Which bodes the question: If we really want to include Eleven and Clara - do we want to introduce a brand new third universe?

[hider=Example]
Universe 1
Nine/Jen
TEXT

~~~
Universe 2
Ten/Summer
TEXT

~~~
Universe 3
Eleven/Clara or Eleven/OC
TEXT
[/hider]

Or not...