A solution might be the same answer in How to programme EOS utility to take n number of shots.
I am unsure about EOS Utilities working for the number of shots in a row but an Android App Called DSLR Controller (Beta) works really well with my T4i and when i had a T2i. I havent tested it for the 7D mark ii yet. If you can get a micro usb to micro usb or an android tablet with a USB Port for the standard cord. the app lets you program lots of settings like number of pictures, at how many seconds apart, aperture, shutter speed, iso, change settings by brightness after each photo, etc.
I used it for a time laps of completing the patio in my backyard a few years back and it worked pretty well, to make a time laps of my buddies wedding head table, to get self photos where 10 seconds isn't enough time to get behind the camera, review my RAW images while I'm on the road some where and want to see it on a larger screen.
I would really recommend looking into it and see if it might work for your Canon Camera.
DSLR Controller (BETA) - it costs about $7.99 (CAD or USD, i forget)
Remote Release - A Test app before purchasing the DSLR Controller
The application for android claims to use WiFi as well but do not have a WiFi camera to truly test it but it doesn't hurt to try.