There's no ikea near me, unfortunately, and their shipping is way too high (I tried to order two small carts, about 25lb total and $100, and shipping was $349. No lie). I'm making it 3' x 5'. That's about the limit of the space I have. I will also have a separate 2' x 5' ironing surface that I'm making with an old cabinet (it won't be on casters so I can use a cabinet for it). I am making a whole new underneath part though-I was just going to use the old top. But I think I'll get a new top too.
I'm actually thinking of driving to an Ikea soon. It's about 2.5 hours away. But I wouldn't be able to fit a big table like that in my car along with the other items I want to buy.