Hi
I used the 1195, it was on sale at the time and felt it was more than enough. I hope to be be around 8 or 9 hundred pounds total weight for the teardrop. I am going to try getting it weighed soon. Ours is only 4ft wide and just over 10ft long, I would think your build might be heavier with the extra width. The extra robustness couldn't hurt and may be a stiffer frame for your build. I find that due to the overhang over the tongue from our profile that there is little room for a tongue box. We are going on our maiden voyage this weekend so I will see after that if we need to extend the tongue. It would make backing up easier.
Good luck on your build.