LOL! I know exactly how you feel. My son got me a small one a couple of years ago (used, on Craig's List) and I have been thrilled with it. But it's at HIS house and not always convenient to go the 12 miles to work in it. I start most of my stuff from seeds under lights in the house and am always in need of a holding spot before planting out so my husband decided to buy me one for our house this year. We got it up just in time to move my seedlings out and it is filled to the hilt! I even set up crates with plywood down the middle aisle and they are full! I had to move some cold hardy stuff outside now to finish putting in the other seedlings.
We didn't even wait to get the mulch down on the floor. Right now it's just cardboard. All the plants will be out soon enough so I'll put the mulch down then.
So, filler up!!! And take lots of pictures to post.