Wow, you must be so excited ! Great news Scotelf
On the planning side - if you can show, not only, that you'll be running a viable business but that you'll be creating jobs or boosting the local economy that will win brownie points with the planners. We tried for 4 years to get PP to build a house on my dad's land (converting an existing building that was in dis-repair) but
they were having none of it
If you haven't already, get a business plan drawn up (business gateway are a good source of help) and be prepared for battle
I suppose it depends where you are, but the planners in South Lanarkshire aren't the most helpfull or forthcoming with information, hope yours are better !
Good luck & keep us posted, when you can
Karen x