Part time hourly pay and cost of living near Mitaka station

I am moving to Tokyo this October to start a 3 year PhD at NINS. However, for now I have only confirmed an 80000 JPY scholarship as most of them are assigned to start on April. My advisor is arranging an IT part time job for me to fund the difference between the cost of living and the scholarships I get, so he asked me how much I need to get paid to live normally.

The job is to maintain an English version of a webpage.

I plan to live near Mitaka station or further west in the Chuo line in koganei. How much should I expect to pay monthly to live in a 1DK? And how much does a part time job pay hourly? Of course I want to ask for as much as possible but it has to be within reasonable limits.

And of course, since I'll be studying I won't be able to work the full 28 hours a week, I was thinking at most 15 hours a week.

I asked some people I know that worked part time jobs around 2017-2018, and they told me it was like 1100 jpy/hr, but I'm not sure how this translates to 2025 and an IT part-time job.

I last lived in Japan in 2014 and not in Tokyo so I'm not really familiar with the cost of living nowadays.

Thanks!