If I understand your first post correctly, you want simplicity. I'd say go with the Kemper.
They both sound great, and I love my Axe-Fx II and have no plans to jump on to the Kemper train.
The advantage of Kemper is basically "instant tone", you simply browse through the big bank of profiles that people have posted on the Rig Manager, find the ones you like and save them to the Kemper.
The disadvantage however is that these tones are all based on what the people who created the profiles like in terms of tone and therefore it might not sound the way you'd like it to, there are a few parameters that you can shape the tone with, but it's way less than the Axe-Fx offers.
You can get similar results with both units however, with the Axe-Fx you build your tone from scratch and can select from 200(!) different amps and channels, you have a bunch of really nice factory IRs and the option to add some of your own IRs(created yourself, downloaded or purchased).
If you're impatient with getting to that sound you hear in your head, I'd say the Axe-Fx is not for you, there's a lot to learn about the unit, I've had mine for 2 or 3 years now(can't remember) and I still haven't figured out all the neat tricks.
The other guitarist in my band has an Axe-Fx Standard and he's the one who turned me onto the unit, he switched to Kemper a while ago because he got tired of constantly searching for the ultimate tone and just wanted to be able to plug in his guitar and crank up the volume.
Me on the other hand, I like to take part in the quest for tone, I have a lot of different sounds that I've felt has been the one for me, it constantly changes though and I'm really closing in on the best possible sound for me.
I'm making it sound like it's gonna take forever to dial in great tones, but this is not the case, you can get there pretty fast as long as you know what you're looking for, and with FW18, it's even faster.
So in short:
If you want to plug-n-play, go for Kemper.
If you want to be able to customize and tweak the tiniest little detail, go for the Axe-Fx.
And also, I think that during the past few weeks, the other guitarist has started to warm up to the thought of Axe-Fx again
EDIT: Oh yeah, and since you already have the amps you seem to want to use and you're only looking to bring down the size of your rig, you can simply capture those and store them in the Kemper(or Axe-Fx using the Tone Match).
EDIT 2: And for the record, I find that dialing in clean tones in the Axe-Fx is a breeze, it sounds instantly awesome, tones with more gain is a bit more difficult. I have yet to hear clean tones from the Kemper that beats the Axe-Fx.