If you have 7 hours a week to spend on this game, I think you should do something like:
- 2 hours of puzzles. Aim to attempt about 15 puzzles in those 2 hours. Take your time and try to focus on accuracy, rather than speed.
- 3 hours of playing rapid games. I'd choose a time control like 15+10 where you can expect to get through about 6 quality games during this time. It's way better to play a few slow games than play heaps of blitz/bullet games.
- 30 mins of analysis. Just check over your rapid games with an engine and see where you went wrong. If you don't understand, then post that position in the forums and people will help you.
- 90 mins of watching YouTube videos. I personally think that IM John Bartholomew is great, but there are plenty of other options out there. Just find any chess YouTuber who speaks and explains things in a way that you understand.
I am in a similar situation. The site My Chess Lines has been a great way to learn and practice openings.