300 f/4 is, 400 5.6, or 70-200 OS Sig, or 200 2.8L for sports Please Help!

Narrowing down lenses for sports shooting including football, soccer, and basketball.

I currently use my 70-200 f/4 is for soccer and football and 135L,28-75, 17-55, and 85 1.8 for indoors/basketball.

I'd like something longer or faster and have up to $1,500 to spend.

I've put off getting an extender since I am worried about autofocus.

I'm driving myself nuts. Would you :

1. Get 1.4 extender
2. Buy 200 2.8 L for night football and have lighter option
3. Buy 70-200 Sigma 2.8 OS and sell f 4/is
4. Buy Canon 70-200 2.8 and sell f/4 is
5. 400 5.6 for more reach
6. 300 f/4 for more reach
7. Sell 70-200 f/4 is and buy 70-200 L

Football / soccer as long as you have good light the 400 5.6

Basketball stick with your 85 1.8.