When i fish paste on the feeder it is always dry paste rather than traditional wet paste.
On the hair i have a hair rigged pellet as this offers a second bait once the paste has broken down.
The paste, as said before, is mixed dry. it is mixed to the point where i can pinch it around the pellet in a couple of squeezes between thumb and finger, sort of similar to a groundbait around a maethod feeder.
I dont belive a wet mix offers any advatage over a dry mix as as soon as the 'paste' enters the water, due to the dry nature it will absorb water and turn wet.
dont bother using extra lead to minimise effort casting, it's not really neccesary and will just offer more resistance when the carp takes which is the only advtage i can see there. a semi-fixed rig is also very good to use.
I really do reccomend the hair rigged pellet as apposed to other methods though as it does give a second abit to fish should the paste come off during the cast (it shouldnt/normally doesnt mixed dry) as well as being a very good shape to hold paste firmly unlike a bead/leger stop.
I hair rig a 8mm boilies / pellet and wrap paste around it, if you paste is gone a bit there's still an hookbait. You can use a drennan stop bead/korum change bead also.
Don't use light mix like Ringers, swimstim, method mix all are good choices. Sometimes I mix meat in it and it's a killer.
I use a small hard pellet on the hair and wrap the paste around that. I use quite a still paste which is good for casting. I normally just use damp pellets then squeeze it into a paste. I fished feeder and paste last time I went out and its killer. I stuffed my feeder full of damp pellets , hemp and corn then put the pellet/paste combo on the hook and caught masses of fish when other people on the lake were finding it hard.