Shalisk
Been selling for several years, fairs and some "distributors" (that is friends who love the soap and love craft fairs) around the U.S. You will probably want to adjust based on where and how you plan to sell.
I use 3 basic recipes, and also do lotion bars and lip balm. Depending on season the colors and scents change, and I will add maybe 1 specialty soap and 1 fancy attention getter. The 3 basics may change from time to time when I develop a recipe I fall in love with - I'm fickle. I've found 1 recipe that people always come back for, and will probably always offer that. (of course it's the most finicky recipe I have) I don't want to disappoint them by not having it. We have each developed our own recipes and niche - you will too, and decide what works best for you.
My guinea-friends and family, of course, get new things that I just had to try all the time. Like so many on this thread suggested, keep working on recipes that you develop and love.