Story
First arrived in the UK in 2005, with my parents at age 9. In 2007 I moved back to Latvia. In 2010 I returned back to the UK, and have continuously lived here since.
2012 - Finished High School
2014 - Finished College
2014 - Started work, and have been employed since
Problem
I’m applying online https://visas-immigration.service.gov.uk/product/eea-pr for a permanent residence document. And it has stated:

Questions
What are the chances of my application being successful if I did not have (CSI) during my time as a student?
Will a refused application penalise me in anyway, or even stop me from applying again?
Alternatively can I apply as a family member if one of my parents has worked over 5 years continuously in the UK as stated in https://www.gov.uk/uk-residence-eu-citi ... residence?
And finally is there any indication on how long an online application might take?