In reply to Inhambane:
I'm sure someone will be along with recent experience shortly - mine was 40 years ago - but the mountain won't have changed that much apart from a good deal of glacier recession.
What do you mean by Mt Kenya? The highest points, Batian and Nelion, are technical climbs by any route. I'm not sure whether any "tour companies" guide these routes. If they do, then you may find your climbing ability (5+, 6a) is on the low side. There is nothing harder than this on the standard routes, but there are many pitches to climb and the relevant experience would be that gained on long mountain routes in Britain, or in the Alps, which I'm guessing you may not have since you've use sport climbing grades to indicate your ability.
Most people who climb "Mt Kenya" actually climb Point Lenana, the third summit, which is a walk, albeit a long one, at high altitude for the summit day. Back in the early 70's the top section was largely on snow but without any technical difficulty - rock climbing experience certainly not required. I understand much of the snow may now have gone, but then it was definitely terrain for mountain boots and an ice-axe - akin to winter hill-walking in Britain.
If you are intending to use a tour company then I expect they will provide you with the detailed information you need. Back in the 70's there weren't any tour companies of course. We carried all our own kit and made our own way.
Have a good trip - It's a fine mountain, and an interesting country.
Martin