If you just want the basics, I think the following setup (what I use) strikes the best balance between ease of use and what you get:
RaceChrono + external GPS + wireless OBD2 + GoPro
Optional: Add a cheap wired lavalier mic to the GoPro, run it through your trunk, and tape it to your license plate for better engine sound.
Everything talks to your phone/RaceChrono pretty seamlessly. I use the SkyPro XGPS160
With this setup, you do need to import the corresponding GoPro vids into your phone (using a portable card reader), then you ID those vid files within RaceChrono to synchronize with the data. It's auto-sync feature works quite well, click one button and done. Then, also within RaceChrono you export the sync'd vid with whatever overlay you want to an mp4. You then can send that file wherever.
Here's one of my vids with this setup