Buying first kayak, need some info

[colinhall00]

I am looking to buy my first kayak, and don't know which model will suit me the best. I would like one that converts from a 1 seater to a 2 seater. I will be fishing in the Indian River in Fort Pierce, FL. Probably not much Ocean use. I'm not a huge guy, but I would like to take my gf out fishing on this with me, so the yak needs to be pretty stable. Durability is a must! Any suggestions would be great, thanks for the advise.