Congrads on the early find and surgery to remove.
I've been working with my mom for years with melamona at its worst so I'm learning all the options.
I agree with your approach. Not at all time for any chemo type treatment for you. The time could come in your life but it is not now! with only one area and on your leg and with having it removed surgically - no radiation either is needed at this time.
Keep the early watch out. Get regularly scheduled dermotologist exams = head to foot. A dermo that does not strip you down to look at all of you is not doing the job for melanoma! Find one that does.
You also need to keep on the watch for things yourself. To be honest we find more than the docs do.
Scans should be taken regularly too. To find what could be "inside" vs what you can see on the surface of your skin.
Surgery is a great solution with or without radiation for many skin based nodes you find .. if you find them early!! Other treatments are not needed if you keep the watch up and it stays on the surface.
Best wishes on your recovery.