I have appointment next week and have final checks and now what soever I thought was right,looks wrong now

Please help..I am Filling SET O application on TIER2ICT.
1) English Language:- I have Done my Masters in English language and has got a letter from my University India. Also taken PBS calculator printout. Now I see KollList of tests on ukvi site ststes that it is must to write any ELT, but I have no time really.
2) In Section 6.1 first entry date really bothering me. Because I was initially on WP(5yrs continuty broken) and then on TIer-2 ICT(5yrs continuty holds good).
a. Dates based on was on WP visa:-Arrived 27April2008 - Left UK 14OCT2009 and Visa expired on 29December2009
b. Dates based on Tier2ICT:-Visa issued on 27Jan2010 & arrived in UK 04Feb2010 living since then - both on same employer/sponsor.
I Feel to like 04Feb2010 fits in section 6.1, but when filling section 7.11 how long you stayed in UK should I count from 27thApril2008 or should I count from 04Feb2010. Also I got letter from My company from 04Feb2010, though intially my HR want to give it from 27April2008 I asked to do it 04Feb2010, but I now regret. Please advice on this.
3) My SOC was given as "2139 Information and technology communications Professionals", but when I look in to the UKVI SOC code of practise there is no Professionals work on it, will it be a problem/issue.
It is really urgent please help
Regards,
VPS RAO