You've got some good replies here and I agree with @Calyxander about the situation you're in. My strong recommendation (because this is where all my experience is) is to keep them in bonsai form for the next few months. This will allow you to use the fluorescent lights and their poor light penetration to maintain the plants as sturdy little versions of their full grown selves.
As @Tinytuttle mentioned, you will then have the opportunity to sex and get to know the plants a little so that you can cull as many as possible to reduce your wasted time outside.
And man, make sure you match the outdoor photoperiod as closely as you can so that you don't create an ubrupt change and trigger flower. You only do that once as it is agonizing to see them struggle back, right @Meesh ha ha!
Anyway, you have to get good at pruning and training the branches and pruning the roots when you repot them, but you can just take your bonsais outside to harden off in bigger containers when the time is right and they will transition to full sized plants again.
Not sure what you think of this idea, but it will keep you busy until they can go out ;D