Hey man, you can repot them really easily - just prepare your new (bigger) pot, with some new soil (& vermiculite/perlite mixed with it) in the bottom so that the bottom of the plant's stem is about 3" below the rim of the pot...

Give the pot its in right now a tap on the sides and bottom, hold the plant upside down with your fingers around the stem, and slide the pot off. Place the plant into your new pot, fill in the sides with soil, press gently down on the soil as you're fillin in.. give a good watering in and thats it.

So long as you don't disturb the root ball too much (or at all, which is possible), then you shouldn't shock your plant (noticebly) at all.

Hope this helps, and you're plants are really starting to come on.. good job:thumbsup: