Prop is a short acting ester of about 4 days which most people inject every day or every other day. Assuming you go EoD that would be roughly 22.5mg of test Eod, which frankly probably won't yield any noticeable results at all and you'll end up putting yourself through PCT for nothing.

Most guys go with 100-150mg EoD, some as much as 200mg+ EoD, never heard of 100mg a week which is as Euro pointed out, only 25-50mg more than what you're already producing naturally.