Space, time and energy to keep them weeded seems to be some of the controlling factors in deciding how many one can manage. I know I made too many crosses last summer and have more seeds then I will plant, but I have a friend who takes my extra seeds. Also note that not all of them will bloom even on that second year, and you might end up keeping them for a 3rd year before you see them bloom. I try to keep the seeds that are from crosses that support the goal(s) I have for outcomes, but I also always seem to make some crosses that I think could make really nice offspring too, just for fun. Then I end up with more seeds then I can manage. I wish I had gotten hooked on this when I was younger. Oh well, it is what it is, I think you should just go ahead and do what you think you can manage, and learn from that and move on. I know I have had to curtail my iris purchases because I am getting near the point where I have too much to manage.
