I would check out the Seedbanks thread on here.
Especially the Who Can We Trust thread
If you’re on the west coast there are a plethora of seedbanks in your area:
- Seeds Here Now
- The Seed Source
- Helladank Seedbank
- Harvest Mutual Seedbank
- Humboldt CSI
I would be careful about growing sativa types in your small grow space as they are known to get quite tall. You can veg them for 10-12 days then flip to flower to avoid them growing into the lights. Also keep them in relatively small pots (about 2 gallon) to keep them maintained.
Best of luck!