With your 2014 Toyota Tundra 4x4, 5.6 liter you will have the ability to tow either of those. There is a learning curve for sure, and going to the limit is never a good idea until you research it yourself, get the right hitch and mirrors, and really think about it.
Many have done just fine, but it really helps if you are familiar with how a trailer tows, and how to back it up.
Buy a good used unit first at a smaller size, and try that. If you choose wisely, and still want to go bigger, you could. You have the power, but do you have the experience?
