Using ClimbKIli and the Machame Route is definitely the way to go. The 7 day machame route gives your body the proper time to acclimate and allows you time to enjoy the hiking and views each day. ClimbKili has done this so many times, they have it down pat. Experienced, helpful guides. Proper support staff and nourishment. Perhaps most important, the guides and staff always seem to be enjoying the trek as much as you do. Perhaps the most important thing is having the proper gear. I followed their recommendations and had no problems.