Painted soil and vent bits identification help needed

[WaterTight]

Want to replace WC. Want to replace pan con and new WC waste may be slightly higher/lower.

Never installed soil and vent so am guessing a bit here.

Purple line fitting: regular pan conncector
Red arrows: 110 elbow with top end being plain and bottom end having rubber seal.
Inside elbow and also inside blue line fitting: Piece of 110mm pipe? Blue line piece some sort of spigot coupler?
Yellow line fitting:?

I don't have any 110 pipe or fittings kicking round and would prefer to avoid getting any if unecessary. I want to pull free what I need to pull free and put in a new pan con while being able to allow for new connection being further out from/further in toward wall and/or higher up or down.

Where should I be trying to separate and what bits should I be armed with?

Thanks

 

[Chalked]

It should pull out from your blue socket. The new pan will probably sit closer, so you will need a short ( 2 1/2") piece of soil pipe and a bent pan connector.
If your new pan is the same, it will connect back in to the existing. Most pan drain connections are the same height from the floor, about 7 1/2".