Kelby,
You can learn on just about any properly sized board. An old surfboard would be fine, as would the molded boards from the HL, LF or CWB which are low cost alternatives. The WP also has an entry level 5-oh.
You are not heavy by any means, but are starting to get out of the 'light weight' range.
When first starting to learn, most folks do better with a longer board. Something in the 5' to 5'6" range in a wakesurf specific board or around 6' in a shortboard.
Just make sure you have a wake that will allow for the longer boards when learning. A too short pocket can intimidate folks when they are learning, especially on longer boards that "appear" to be only inches from the transom.
Keep us posted!