Heya,
It really depends on the outcome that you want.
I do video with a T4i and I find it fine. But I'm not looking to produce high res video with it. Mostly clips that I can then compress into DIVX/XVID/MP4 to save space and just have memories to look at later.
For amateur video, the camera is just the camera, what really takes it up a notch to really enjoy later, is the audio quality big time and how shaky it is. Lens stabilization helps a little bit with the observed shakiness. A gimbal is really the inexpensive way to get quick stabilization. Otherwise, most stabilization other than gimbal work (those cost thousands for the super good ones) is to shoot at higher resolution and use software to crop the final feed down and align it so it looks smooth and stabilized (this is the cheapest but requires the software learning curve). Having a good microphone (powered) so you can record hiss-free, wind-roar free, full range dynamic sound is a huge difference in video. When I watch a video or see a clip and hear that ear piercing mono sound that is all treble, hiss and some 90's talk-boy audio quality, I click it off and don't want to hear it, it's horrible, and we don't buy hundreds and thousands of dollars worth of camera/video equipment to have THAT as your memory keepsake!
If you use the ultrawide, you can have it set to a fixed focus so you never worry about losing focus taking the work off the lens/camera. You want everything in depth of field anyways because what's the point of your vacation existing as blurry bokeh behind stuff that you can't even tell what it is anymore, right? That 14 rok would be a great vacation movie lens, hyperfocal distance focused, and stopped down. Just hit record, and put a good microphone on there (be it a powered shotgun mic, or an omni, but with big dead cat wind stoppers, etc). I can't stress enough how important good audio really is compared to just having a video to look at later.
By the way, for audio recording, just a quick tip to get you started, you use a powered microphone and you increase it's decibel level, +10 is common, +20 is even better. The reason is, if it records at a high perceived volume, you can then drop it in post by that much, and get a cleaner sound by eliminating hiss/wind, while preserving more voice. Makes a big difference. Check out some youtube clips on how to use a shotgun mic and how that works.
Very best,