Hiring Sheri as full-time (20,000 per year) or per hourly basic?

Should Keon make Sheri his business partner (40% equity) if

Sheri puts in $30,000? Keon has discussed this business idea with Sheri, a dear friend of his. Sheri has been employed as a limo driver in the past but is currently working as a Lyft and DoorDash driver. In discussion with Keon, she grew excited and mentioned she would love to work with him. Since one of the current drivers is retiring, Keon believes he can hire her on a part-time basis for $20,000 a year. Based on current numbers (with no driver on salary), this would be a 8% reduction in operating cost for one limo. However, Keon wants more advice on hiring Sheri on salary versus paying her hourly.

Sheri is also quite talented with marketing and using social media. Keon believes she can have the same impact as spending $1,000 a month for advertising. Keon is wondering if he should offer her a business partnership deal. He would give her 40% of the business if she invested $30,000 and worked full-time as a driver/marketer. Keon wants a detailed analysis on this business partnership idea, including general pros and cons of running a small business as a partnership.