WTB Jr/Kids Wakeboard 109-111 etc

My son really wants to wakeboard. He is currently riding his E-Z ski ~18 mph so I can wakeboard with him. (He has wrecked and knows he is ok).
Looking to buy a wakeboard for him to use/enjoy. (No, we won't be towing him anywhere past getting up speed until he tells us to).
He is currently going to turn 4 yr old.
I know we can buy a new one ~$180.
Was looking for something cheaper if possible for him to try.
Looking for shipping to 16059.
Looking at 109 + unless others have another suggested size.
Thanks.

I've got the board my son started on. Not sure the specs on it anymore. It's at our lake house but I can get you the info and some pictures this weekend. He's riding a Ronix Vision now which is 121cm and I don't think its that big.

Our youngest at the time, 11, started on the Ronix vision 120. He was REALLY small for a 12 yo but probably not 4 yo size. He had no trouble getting up and learning that size. I asked him if he was feeling a lot of resistance getting up and he said no.
For a 4 yo you may need to go pretty short.

Take a look at the Liquid Force Fury.

http://www.liquidforce.com/wakeboards-fury.html

^^just bought last years 118 model for my 9 year old and board is perfect for her.

Bought 121 Fury. He loves it and the color as it is his favorite.
He can't wait to hit the water.
Attachment 22882
Video trying to jump...Are we in trouble or what?
https://vimeo.com/137488142

Awesome! He will love it.