Long time not with this forum and sharing my last application

We are family of 5, all are Singapore PR. Both are working full-time in Singapore and family income is SGD 120,000 annual. Race: Chinese , Elder daughter 8 years old P2 student at local school; Two boys: 5 years old boy attending K1; and 7 months old boy. Elder daughter was born in UK and the youngest two sons were born in Singapore.
First we family of 4 person got PR in late 2012 under my sponsor and the youngest son got his PR within 3 months in Dec 2016 by my sponsor too. We bought 5 rooms HDB flat in End of 2015. Now we have 1 helper to look after our children.
We went to ICA to apply SG citizenship in March 2016 and got the appointment date second week of November 2016. So family of 5 applied SG Citizenship in November 2016 by my sponsor and still waiting for the outcome. Now nearly 6 months waiting..... The officer told us , it will take 6 to 12 months . If the outcome is not yet out then we will renew our REP in August 2017.
Any advice base on my family profile as above?
Thank you in Advance!