Avoid sets. You buy more chisels than you will use, so it's not such a great deal.
I agree with Rich's recommendations.
I have a 1/16 wide chisel and a 1/8, both of which I adore. If I had to choose between the two, I'd pick the 1/8"
All the above are long handled tools, 6 to 9" long.
If you don't have one, you NEED a Nicholson #49 cabinet rasp. Half round, smallish teeth, it makes stock shaping a breeze. I know you have a pre-carve, but there is often too much wood left on the stock.
Tom