You can't not maintain your lifehood, don't forget that you will have MPF, so that you just can earn 12,350 per month, transport fee around 30-50per day,lunch fee around 50-70 per day, if you need to spend around 150 per day and around 500-1000 for other fee such as your 4G/5G fee for mobile phone, maybe you should rent a room with sublessor or rent a subdivision.