There are two important factors you did not mention.
- Do you want to retain copyright for future benefit to you, or is this purely community?
- Do you want to make money out of this, or will you compete with someone who does?
The basic breakdown is this. If you make no money out of it and harm no-one then just do your best, acknowledge the work of others and don't worry too much. Distribute your code any way that makes sense to you, including dependencies if you like. No-one will be harmed and the community will love you. Don't sweat it. If you need to do something different, wait until someone tells you and then talk to them.
If you make money out of your product or services and/or if you may cause damage to someone or compete with someone who does, then you must take competent legal advice. That won't protect you, but it will warn you about the risks and possibly help to mitigate them. You are at risk, even if you don't realise it, and the more money you make the bigger the risk.
The point of this answer is that you should worry far more about whether you code is valuable to others, whether you are contributing to the community and whether you are likely to upset someone than you should worry about the nuances of wording. You cannot get it exactly right without a lawyer but you don't need a lawyer to 'do the right thing'. Do your best, and get on with what you do best: writing code.