Core m3 MacBook with 256 GB SSD.
Core i5-7Y54 doesn't provide that much of a speed boost over Core m3-7Y32, and if it's really mainly just consumption, you don't really need 512 GB storage either. The extra storage can't hurt though if you've got the cash, and actually, what you describe is NOT a consumption machine. It's a combo machine.
What I did once I found out the 2017 was using the m3-7Y32 and not the slower m3-7Y30 was to get the m3 with 256 GB but maxed out the RAM at 16 GB. My usage for it will be very similar to what you described. iPads are extremely painful to use for Microsoft Office or iWork IMO. The 16 GB should give me a long lifespan for the machine, as I think 8 GB is necessary now in such a machine, and memory usage doubles every 4-5 years or so, in my experience. I do think memory usage increasing are plateauing to an extent, but either way, in 5 years, 8 GB will be quite restrictive. Perhaps 12 GB will be enough, but that's still more than 8 GB.
Oh and I use an iPad Air 2 for Netflix, surfing, email, and Infuse video playback. The 12.9" is far too big for my tastes for this purpose, but doesn't solve the productivity issues because there is no mouse/touchpad interface. As Apple itself says, touch screens just don't work well for productivity applications (unless you're an artist or something like that).
BTW, I have three friends with the 12.9" iPad Pro. Two of them don't really know what to do with them. They're too big and awkward for media consumption, and they can't use them for their work. So they just sit mostly unused, strangely enough. The third guy loves his 12.9" to death, but he is a web designer, and uses the iPad as a palette for stuff like Photoshop and also to demo web pages to clients, and stuff like that. ie. Very specific usage that cannot be applied to business applications.