Welcome to ALR Lentuk.
So far some good suggestions have been offered about kits.
Bedding the barrel on a kit gun (the very first task) goes from very little to do to a bit more, but all are fairly easy since the barrel channel is mostly done. Generally it is a matter of further fitting (bedding) the barrel by some careful scraping inside the barrel channel being careful to not create gaps between the barrel flats and the wood.
In some cases a pre-carve kit will require that the barrel be moved backward about an eighth of an inch so that you have the proper relationship touch hole to lock pan, that relationship is something you will have to check into early in the build. Doing this, moving a barrel backward, is a matter of careful work with a very sharp 1/4 inch flat chisel. I had to do that with my first, a Chambers lancaster style kit. As long as you go slow and deliberate you will do fine. The goal in every case is to end up with a sold wood to metal fit at the rear of the barrel with the touch hole lined up vertically at center pan.
The big plus is that ALR is a great resource for obtaining help and getting questions answered during any aspect of a build. Don't hesitate to ask questions of you feel stumped on something.
dave