If this is your first apiary (and looking at your other posts it probably is) unless you drive past there every day it's too far ...
In your first couple of years you need somewhere that you can drop by very regularly - you learn from being with your bees and seeing them at various times of the day. Out apiaries too far away or inconvenient in any way will discourage you from visiting .. weekly inspections during the season are the absolute minimum but as a beginner you may well miss vital signs of what they are up to if you are only there once a week.
Ideally 10 minutes away maximum - walking distance even better, I'd look for somewhere closer .. lots of big houses with big gardens in Poole and around .. look on Google earth for likely sites within a sensible radius of where you live or work and go knocking on doors or make up a leaflet and drop it through the door. Don's discount business premises - they often have areas of space around them where you could place a couple of hives. There is often better forage in urban areas these days than out in the sticks.