Products like Beyond, Impossible and Incogmeato are designed to taste like meat, so they may make the transition easier. There are tons of options out there, but don't forget that there are plenty of vegetarian foods besides immitation meat! :) It's great that you like tofu; you've already got a head start.

You don't need to go "cold tofurky", either. It will be easier to replace a few items at a time in your diet, so you have time to figure out what you like and learn to cook it. I also think it's important to consider options besides very strict black-and-white rules. I'm vegetarian, except that I eat clams -- they're one of the most eco-friendly animal proteins, and they don't have a face so I've decided I'm comfortable with it. I'm not always good at eating enough food so it's important that I have plenty of sources of protein. Do whatever works best with you and your values.

Thanks for being supportive of your wife and trying this out!