L-1A Visa

My sister is a naturalized US citizen and she is planning on applying for my GC. I have 2 questions:
1. If my company decides to sponsor my L1-A visa (after my GC application is submitted) will my L1-A be denied because of my GC application?. I have a multiple entry 10 year tourist visa that will expire in 2017. If I apply for a new tourist visa in 2017, will that be denied?
2. Furthermore, my father's GC (consular processing) is being processed currently. Once he becomes a GC holder, can he apply for my GC (I am single over 21 years of age) in such cases Processing time is also much less. If my father can sponsor my GC, what happens to my application in the unfortunate event of my father's demise during this period?

Currently I'm on L-1A status and it expires in *** hence my employer is planning to file new H-1B this April not change of status. Here are my questions...<br>
1) If I get H-1B this April, is it mandatory to work on H-1B from Oct 01, 2015?<br>
2) Shall I continue with L-1A status until it expires and then can I change to H-1B?

I have 14 years of overall IT experience and performing Manager, Service delivery role for past 3 years. Planning to enter USA in L-1A visa. I have a team of 30 resources, working in Chennai, Shanghai and San Jose. They all report to me. <br>
My Questions:<br>
1. How long I need to wait to initiate the GC process?<br>
2. Do I have a choice of selecting the type - EB-1 vs EB-2?<br>
3. I don't have bachelors or masters degree. Will that be a barrier for applying GC?<br>
4. Should I apply ONLY through my employer or can I apply myself