How can I keep clones without having the space?

So, I grow in my closet and in a few weeks my seedlings will be big enough to take clones from and from there, I'd like to put them outside. I can't keep veggin in my closet because I want to flower these 2 after I take clones. I don't have anything perpetual just one room for each cycle. I have a 4x4 tent that I could place in my basement but I don't think it can fit the 20-25 plants I want to place outside this year.

I was wondering if anyone could post up some DIY things you've done over the years or any information on how I can keep these girls growing until April. Thanks.

I use a big carboard tote, like the one's you see in the gerocey store with watermellons or corn in them, turn it upsidedown cut out a door and mount your lights. 20-25 clones(keg cups) should easily fit in a 4x4 tent, and if you use floros they should'nt out grow the tent in 3 months. I don't know how big your closet is, but most likely you're not useing a big light to begin with. If you want a big family your gonna need a big station wagon to drive them all down interstate 420.