The floats I use are/were made by Preston Innovations, they are self cocking floats,
The distance I fish either down the margins or just in front of me means I dont need a dedicated paste cup to go on topkit.
You can buy paste ready mixed ,swim stim do a few good flavours, Swim stim groundbait also makes a good paste.
I think Ringers do one where you empty contents of bag into a tub, fill the bag with water to a line marked on the bag and pour into tub with paste powder in and mix well.
Dont forget to balance your tackle to the rigs you are using. Another tip is try fishing pellet over paste. That will catch some decent sized fish.