Rent allowance question

Hi, I'm new to this and looking for some advice, apologies if I'm posting in the wrong section

At the moment me & my boyfriend are living in a 3 bed house, the rent is €800 a month.We are both unemployed at the moment and have one child and receive €342 weekly on Jobseekers. We are getting €640 off our rent and only pay €160 monthly with the rent allowance.
I have been offered a part time job (20 hours a week) I would be paid €8.75 an hour , earning €700 a month. I'm wondering does anyone know how much rent allowance we will be entitled to if I take the job. Also wondering am I entitled to any family income supplement aswell. I really want to get back working but don't know if it's worth my while?
Any help with this would be much appreciated,
Thanks in advance!

Your Jobseeker's income will be reduced if you take up work. You can apply for FIS because you work at least 19 hrs per week.

Both of these changes, plus your earnings, will affect your entitlement to Rent Supplement.

Your part-time earnings (gross pay less PRSI and reasonable travel expenses) will be assessed for Rent Supplement as follows:
First 75 euro is disregarded
75% of the balance is assessed as means.

FIS and Jobseekers Payments will be assessed in full as they are now.