Renewal vs applying for PR

[Pradsbvb]

Hi there,
I have got a immigration question , hoping the forum might help.
I got my tier1 visa valid from 1st nov 2010. I came to UK on 9th jan 2011 and went back on 29 jan.
Since then I have made following journeys
Landed in UK on 20 February 2011 and returned on 23 April 2011
Landed in UK on 30 July 2011 and here since then.

I didn't have job in UK between 9th jan 2011 - 30 July 2011. I was working in India for the same company as I'm working today in UK.

Now I'm planning to apply for PR in nov 2015 as my current visa is valid till 22 jan 2016.


My question is
1. In year 2010 - 2011 have I crossed 180 days limit? My confusion is weather the time period between my start of visa and day I came is counted towards 180 limit ? Also considering I wasn't working in UK.
2. Is it better to go for a another renewal in apr 2015 instead?


THANKS.

[Pradsbvb]

Hi all,
Can anybody help answer my question please??