First Airstream

Hello everyone! This is my first post and I'm so excited to have found your community! I'm buying my first air stream and I'm trying to decide between the 27 FB International signature and the 30 International signature and I would love to hear your insight. I will be full time in the air stream due to moving to San Antonio for work. It's just myself and my cat and I'm selling everything I own so I'm leaning more towards the 30 because of the storage space, the size of the bathroom, and the rear bedroom. I also need an appropriate TV, does anybody have any recommendations for me for help deciding between the two sizes and a tow vehicle? Thank you so much for any help that you can offer it's a little bit scary doing all this by myself, I'm in my thirties but I've always wanted to do this so I figure now's the time! :-)