@Catfish: The 2S 950mAh are relatively large, and the Graphene are heavier than the regular nano-tech LiPo. These packs do have excellent power density! However, as you already found, they’ll likely turn any 11xx-based build into a brick.
If you want to go with those 1106 6000KV motors, you’ll probably want to stick with the smaller 2S and 3S packs you are already using. The 2S 950mAh will probably work OK for mellow cruising type flights, e.g. to explore new spots, rather than all-out aerobatics and/or racing.
If you do want to use those 2S 950mAh as your primary LiPo option, my recommendation would be to consider a 4" build with 1306/1407 4000KV motors, or even an ultralight 5" build with 1407 around 3000KV. You’ll get better efficiency and endurance than with anything 3" or smaller. But AUW will be a little bit heavier and motor-to-motor size closer to 155mm (4") or 190mm (5").
PS: As long as you keep AUW super low, I think your 20x20mm electronics will work fine, even for 4" and 5" mentioned above. Key is to cut weight obsessively and meticulously.