As another responder to your post said, the Kibler rifles are really the only true kits, other than the mass produced ones from Pedersoli, Lyman, Traditions, etc. The other "kits" like Track, Pecatonica, TVM, Tip Curtis, Chambers, Muzzle Loaders Builders Supply, Dunlap, etc. are actually parts sets regardless of what they are called. These take at a minimum a basic collection of small chisels, rasps, gouges, files, drill bits, electric drill, and taps. If the butt plate isn't inlet and the forearm is left unshaped, you will have a lot of work doing it with just those basic tools. A good thing to get a handle on what is involved is get the DVD from Chambers showing how to build one of their kits. Also as mentioned above, Jim Kibler has made several videos on making his guns and put them on YouTube. They are excellent and free.
I'm a pretty serious amateur builder, so when the Kibler SMR came out, I built one for sale. I used a few chisels to clean up the inletting around the tang, some small files to put a draft on the tang, trigger guard, and lock plate for easier fitting and to clean up the cast trigger guard, butt plate and lock plate, an electric drill to drill the hole in the lock for the lock bolt, trigger plate (and taps for tapping those holes), drilling the holes in the under lugs on the barrel and the tabs on the ramrod ferrels. While Rice barrels generally have a pretty good external finish, you may want to draw file the barrel. I find a good quality 8 or 10 inch fine cross cut file from the hardware store to work fine for draw filing. I believe Jim Kibler has done some of the drilling and possibly tapping on his later kits. You can call him and speak to Katherine or Jim and they will tell you what you want to know. Their contact information is on their web site. While the information on building one of Jim Kibler's kits makes it sound like a lot of work, it really isn't as you'll see if you watch his videos. I suspect you'll not need more than a very few days to build one, even with no prior gun building experience.
I don't intent this to be an all encompassing reply, just a top level answer to your post. But whatever you build, don't rush it or you will regret it.
Don Richards
NMLRA Southeastern States Field Rep Coordinator