If you are going to do flasks and seedlings, especially in an apartment, I'm guessing a nice indoor greenhouse (or two) might be nice. And you are going to need to plan for when they get larger because then space becomes an issue...and fast. lol I can't wait to see your set up. Now if you are going to do phals and oncids, a window shelf would work nicely with humidity trays. The seedlings though really have to be kept at specific temperatures, need set lengths of time for sun and dark cycles...so your greenhouse would be best "imho". I'm sure indoor growers will be much more help on lights, supplies, etc.