I prepare my sites before I put my seedlings out so that I don't have to return very often and have great success come harvest time. A few suggestions if i may...
1)The deeper the cup or pot the better for root development
2)Place the seedlings into as much wet moisture retaining potting soil as you can haul out to the site. This will insure them a great start.
3)your plants will thank you for a scattering of a slow release nitrogen fertilizer
4)Pay close attention to the existing vegetation. Steer clear of areas of one species of plant or areas that flood in the spring.
5)To prevent sun shock either give your indoor grown seedlings a litttle real sun everyday or cut off a branch and place it just south of your seedling. It will wilt in a day or two giving your plant a steady increase of real sun just like it needs.
6)If you can start with female seeds or female clones, If this is your first year then practice with Nirvana seeds, they are pretty good and very cheap

hope it helps