Hey---I had jaw surgey as mominashoe said. Ive been eating soft foods for a long time. Yes a good blender would be a very good idea. I would recommend a vitamix. that blender gets things blended up very well.
Are you wired shut? ONe thing that i had while i was wired shut and even afterwards was to take the pea soup from cambles and mix it with beef broth or chicken broth. I simply put it in a syringe and shot it into my mouth and swallowed. YOu should be able to get a syringe from either a pharmacy or your doctor. I also took meat and potatoes and blended them up in the vitamix so that it was practically liquid and just drank it. The more liquid it is the less chewing you have to do.
I actually have a cook book specifically for those that have had jaw surgery. Its all things that you would normally cook and then put in the blender. As long as you make sure to add enough liquid and blend everything very well so that there are no chunks you should be fine. you can also boost the nutrition by using protien shakes. MEt-Rx is the best one for nutrition that ive seen around. You can google it.
I would be willing to send you that cook book. let me know if you want it.
I hope that i have helped--if you need any thing dont hesitate to contact me.