You will want to have GOOD strains that have a good yield. A popular name helps, but quality is what matters in my opinion. Keep up to date on new strains and be the first in your area with the great new genes. You can sell bud and clones that way.

It was easy to recognize and list some the Strainreview website and I found there reviews helpful, but take the info with a grain of salt.

Pot of Gold (one of my fav)
Blueberry
Northern Lights
Kush types
Mango - a.k.a. Green Crack. BCBD has more of a stable version than KC Brains I hear.
Cheese
God Bud
Blue Cross (Northern Lights x Blueberry)
Hash Plant
Sensi Star (another fav)
Gold Star (Sensi Star x Pot of Gold) - Current smoke, love it

Some popular sativas just incase you are wondering:
Haze - In all it's forms... Long flowering
Trainwreck - Grows kinda wonky with unsemetrical arms
Jack Herer
Kali Mist
Strawberry Cou Kee