Your Combination

Retail

Provides immediate income and can develop into a good steady income whether full or part time.
The couple in Ireland who do the most retail earn over €4,500/£3,000 a month. This took several years and some consistent effort to achieve but they are now debt free and and enjoying life.

Sponsoring

Does not on its own give any immediate income, but over time as your business grows, with more people showing others, and increases in turnover so does your income.

Learning and Personal Development

Not an issue if earning a couple of hundred a week to pay off a few bills is all you want, but if you want a luxury life while working part time then take the advice all of the people in that position have to offer.

Summary

If you want income now to pay off debts, generate holiday money, pay for a car, just concentrate on retail.
If you have enough money now and are looking to secure your future or escape the rat race then concentrate on sponsoring. Word of caution new agents tend to copy the person who introduced them, so if you do no retail at all you could grow a team and have no products being bought at all; no products no income.

Your Balance

Which aspects of the business you decide to do or what emphasis/effort you put into the different areas is entirely up to yourself. The person who referred you to this site or someone in their sponsorship line will be able to advise once they know your aspirations.