I think that applying for planning permission for your helipad is a can of worms that you may regret opening...keep to the current situation.
As you have learnt about the turbines in the 'pre-planning stage' there is time to gain information from the planners and Council members as to what is being considered and how best to have your views heard (not necessarily taken into account mind).
Only 'material considerations' will be taken into account by the planners and Councillors. You have time to learn and understand what these are and therefore how best to make representations.
Your view and opinion as to its 'beauty' are not material considerations....nor the 'frightening the horses' or possible additional difficulties you may have in using your land for 'exceptional' events.
As for it being 'noisy' the application documentation should deal with environmental acoustics and you can, subject to having to hand good data, make a material case.
However if the fact that you use a helo in your land is known that may ensure that any objection you make regarding noise is viewed with a certain 'bias' that is understandable. It might be that in your conversations with the plannnig officers and your ward councillor that they are relatively insensitive to your concerns regarding noise as a result.
I know its a very different type of noise and affects people in a very different manner...but the perception remains the key.