Mr Murdoch
In the summertime during daylight hours- my humble recommendation.
Cost factor: don't forget the words of John Ruskin
"It is unwise to pay too much but is worse to pay too little. When you pay too much, you lose a little money... that is all. When you pay too little you sometimes lose everything, because the thing you bought was incapable of doing the things it was bought for"
The price might also be more than money?
Enjoy - it's great experience and one a Gentlemen Aviator should relish.