I appreciate your feedback Topaz,it has helped clarify a few things and i feel a little more prepared than i did an hour ago.
Thank you.

Wow,50%.Thanks for your reply Topaz.What would you say were the main reasons for a 50% build increase?

Just still trying to get to grips with the whole process,
This question may be impossible to answer because of so many
variables but some feed back would be appreciated,
If we purchased…

Very helpful post,we are still at the early planning stage and find information like this a massive help.Thank you to all who have posted.