The owner of a greenhouse and nursery is considering whether to spend $6,000 to acquire the licensing rights to grow a new variety of rosebush, which she could then sell for $6 each. Per-unit variable cost would be $3. If her available land has design and effective capacities of 3,000 and 2,000 rosebushes per year, respectively, and she expects to be 80% efficient in her use of this land, how many rosebushes does Rose plan to grow each year on this land?