Hi Helen! Welcome.
Good news is, if you’re new-ish to lifting (even a couple years experience can be considered fairly new), any training plan will work… including the one you listed. And you’re only 20?! Yay! This means you can train with more frequency (and recover faster) than those of us who’ve been lifting for longer than you’ve been alive. Ha!
So, if you have time in your schedule for 5 days a week, and this is something you can be consistent with, it’ll be fine. But I kind of like that you’re lifting 4 days a week with an upper/lower body split.
But my question is, why do you want to lift up to 7 days a week? Is your program feeling too easy? Because there are ways to make it more challenging instead of adding more training days.
For the record, those of us who started lifting in school trained 5 days a week: Monday through Friday. So at 20 years old, I don’t think you’d be doing any harm by training with the same frequency. I would not do 6 to 7 days a week without an in person trainer who can help you manage intensity and volume.
The most important thing is having a routine. So it’s okay if your program isn’t perfect right now. To be honest, there is no perfect plan. The best one is the one that’ll allow you to see results without causing injury or burnout.
You may want to work with a professional – in person – who can help you get the most out of every exercise and feel it in the right musculature. You’ll advance so much faster when someone can give you feedback in real time. Even experienced lifters use trainers for this purpose.
Also, if you’re in this for the long haul, be prepared for your workout program to evolve over time. Especially as you get stronger.
I love that you’ve bumped up the protein, and I love that your main goal is building muscle. Eating in a caloric deficit is not usually what people do when they’re trying to build muscle though. So if it were me, I’d hold off on that part. However, if you’re a beginner and the deficit isn’t too great, you’ll make strength and muscle gains regardless.
What makes you unsure of these? They’re great exercises too. I see that there are only two sets for these unlike the rest of your upper body exercises, so I’d be curious to know the logic behind that. But if you do both sets and feel like you’ve got the strength to do a third, then test it out.
It’s awesome you think of this as similar to Reddit because I was thinking so too. It’s a form of social media but for lifters.
So don’t be scared, be excited! You have so much to look forward to as far as progress and it’s such a rewarding challenge to pursue.