I have been to these many times, but I split them into two outings. B29, Lancaster and Dakota. It's a day out in it's own right as lots of the Dakota wreckage follows the steep Ashton Clough, which is a not easy, up or down. The Blenheim can be tied in with the Wellington, Botha, Defiant and Beaver. A stunning circular walk which also does part of the Longdendale Trail. There is also a gun turret ring off the B29 which is away from the main site that most people miss.