Is there an Electrum wallet avaiable for CRT?
I have finally (I guess) set up the node myself but I get an address starting with P, whereas other addresses according to the block explorer start with A or a 3. Is the P adress legit?
There is currently no electrum wallet for CRT. Also, addresses generated in the new CRT node will always be generated with a "3" prefix. The "A" addresses are addresses from before the hardfork. An address starting with a "P" can thus not be correct.

all the best