Hi,
First, Kibler kits are not everyone's first recommendation for every new builder. The advantages of the Kiblers are they are precisely made and as much "snap together" out of the box as can be commercially produced. Their designs are excellent, components first quality, and when you are done you have a well styled rifle that can be used as a model for what a properly made long rifle should look like. You will understand how all the parts should fit and how a stock should be shaped and refined. However, you won't learn or practice many gun making skills or procedures beyond finishing a stock, and only 2 styles are currently offered, which you indicated are not what you want. If you desire to learn and practice a greater range of skills and seek a wider range of styles, a gun made from one of the other kits or a blank would be better but the trade off is you risk making more mistakes and getting things wrong, particularly with respect to fitting parts, architecture, and shaping. It is all a trade off. The Edward Marshall rifle is an excellent handling gun and I recommend Chambers kit for that. It is a challenge to get the stock shaped right but it is worth the effort. The Chambers kit uses Chambers early Germanic lock, which is closer to the original lock than the Davis jaeger lock usually supplied with the kits by other makers including Track of the Wolf. If you go that route, I recommend 58 caliber. I don't think TOW sells an Edward Marshall kit anymore.
dave