Hey...you are approaching your first grow absolutely the right way. Covering the seed cost(ferts ect) is a great way to ensure you won't be disappointed, but I can already tell from your plants that recovering those costs isn't going to be a problem at all.
I had almost the same approach when I fired up the first indoor grow in over 20 years this last winter, except that I wanted to see all equipment/seed/fert costs to be covered if I "was" to sell the bud. The setup did produce enough to cover the expense easily, and I am now a super happy camper!(microgrow journal in my sig if you want to check it out)