Not an issue. This is perfectly fine.
Josh has recommended having the bass at height that will be the same whether you are sitting down or standing up. That’s a good beginner guideline. As you progress you have to to find what works most comfortably with the ergonomics of your body. Torso, shoulders, neck, wrists, and elbows all play a part in this.
Yes. A good wide padded strap can make all the difference. I tried using a strap like yours and my fretting hand would start to go numb. I got a wide padded strap and never had that problem again. Highly recommended.
You’re only a week in and you’re actually using your pinky independently and you’re aware of your form. Both of those are really good. As you go through the course Josh continues to reinforce details about form and you seem to be on the right track
There were some references to improving finger work on your fretting hand. They were talking about this video…
5 Levels of Bass Finger Exercise (Beginner to Advanced)
It’s an exercise a lot of us incorporate into our warmup.
This is so incredibly COOL! Congratulations and what an awesome experience.
You’re going to have our first BassBuzz Baby! 
