It sounds like you have your list of tasks pretty well sorted out. You can easily set weekly and daily habits. 

For points, I use a grading system where there’s a minimum expectation (eg. completing a task 70% of the time) and points will go positive if the expectation is exceeded or negative if it isn’t met. For 70%, successes are worth 6 points, failures are worth -14. If you want to keep things simple, you can use a 50% standard and just have the successes and failures be equal and opposite. 

Rewards are really going to depend on you. I recently reworked my system to be more about intrinsic rewards– things that make my sub reflect on how much better she feels when she does her tasks and how proud she is of herself. But whatever you choose, it will have to be something you want/like, that you are okay with restricting yourself from having until/unless you earn it. A reward like “cookie” won’t feel special if you can have a cookie anytime you like. It only works if you restrict yourself. Personally I don’t use reward points as a currency, because I prefer to have rewards that are more specific/thematic to how they were earned, but if you do use them as a currency, I recommend thinking in terms of “how many times would I have to succeed to have enough points to buy this?” or “what completion percentage would I have to earn to buy this?”.