typically aim to have the dispenser at the pole as it can be strapped to the pole, and bring the drop wire to the property.
Eye bolt if you can as 1st option assuming there isnt some attatchment already there. Drip loops apply to the property, one from the clamp so water along the wire dosnt concentrate down the same specific part of the property, causing a green mark to form on the wall.
working this way means you can attatch the lead-in working your way down, which is much easier and helps make a neat straight line. Cleats on the vertical @ 450mm spacing (1 1/2 hammer lenghts), horizontal runs at 300mm spacing (one hammer lenght), unless the wall is very soft, then more cleats.
Check if the building if listed with restictions, do you need a coloured lead-in with matching cleats.
Choosing to run a lead-in along the line of motar joints looks neater, although old uneven or crooked walls you have to think ahead and possibly cleat the cable more to the way the wall runs for asthetics. Having a nice straight cable run can look awful on an ye olde cottage thats leaning on undulating.
Have cleat nails below a hoizontal cable, and on a vertical run. try to keep the nails the other side of where the cable will be seen the most.
Dont think of doing a fit as if it was on your house, think of each job as if its on your bosses house. Theres a lot to consider with asthetics, and keep in mind future unrelated maintaince work.
On where the cable goes through the wall another drip loop unless the cable is coming up to the hole from underneath, Never put a cleat at the bottom of the drip loop and place your palm over the loop and pull the bottom away from the wall so theres a small gap between the bottom of the loop and the wall, Both these avoid that green stripe down the wall.
Seal the hole with silicone, try injecting a bit into the hole, then finish off with a dab on the outside and smooth off. Of course the hole is drilled from the inside out and at a 15 degree angle downwards from inside to out. Oh and on the subject of moisture, always check where the DPC is as you never drill under that or through it.