Rosewood tree doesnt grow easily, thats why it is rear.
Most important when deciding what to grow, is location, and what grows there. Second is who is going to buy, and what price you can expect to get. Hard tree do not grow easily, and as anything else, it will be graded and paid for the quality produced.
Op do not say anything about location or if willing to look after his seedlings, because everything you put in earth and expext any return, needs to be taken care of, looked after and protected.