water when top 1" dries. learn weight of saturated and dry pots.
Little leggy as the weak stems tell you, but internodal space isn't so bad.. It may be better to do 2 or 4 unless this is destined for outdoor only? 2 of those can cover 1 pot well, but sharing early on is possible until they get twice as big in the next week or so and 1 plant will need 1 of those lights to avoid stretching.
Slowly acclimate to sun. Don't toss them out there for 6-8 hours the first day unattended. Expose in some shaded area first, then test more intense light. Any sign of wilt, remove them quickly.