General Nonimmigrant Visa

I am on H-1B and my spouse is on H-4 EAD. She got her EAD last year. She would like to do online business where she will sell items online on eCommerce website like ebay, amazon, etsy. These items will be shipped from India. I would like to know if she can do such online business where the items are going to be shipped from India.

1. I have joined a company based on H1b transfer receipt and have got RFE of LCA wage level 1. If, by any chance, the petition gets denied then can the same employer file for new h1b transfer with LCA wage level 2, right after the denial? <br>

2. Is it advisable to find another employer and start a new h1b transfer processing while the current one is still under RFE received/response status?

I am staying here in the US from last 4 years 10 months and have I-140 approved (Received approval Jun '17). To fulfill personal commitments, I am going back to India in Dec '17 for some time however my H1B extension is still in progress (Filed in Aug '17). I am not sure whether the result will be out before my travel.
My question is -<br>
1. If I change the employer in India, is there any way I can come back? What all options I will have?<br>
2. Can my new employer eligible to transfer my H1B from India in case current extension gets approved or RFE or Denial?

Right now I'm in USA on B1 visa. I came last week 1st Oct 2017. Got the stamp for 6 months (i94 expires on Mar 31, 2018). This is the 3rd time I'm traveling to the US on B1. Below are the previous trip details.<br>
Aug 02 2014 To Sep 28 2014, May 03 2015 To Jun 15 2015,3) Oct 1 2017 To till date (Nov 11 2017). Now my company wants to file L-1B petition for me. The employer is ready to file an application for L-1B in the USA if it is legitimate.<br>
1) Now I'm already in the US, so Is there a process to get my L-1B without going back to my country (India)? Is B-1 to L-1B is a complex process? Is there any complication(s) if I put my petition in USA?<br>
2) What will be the time frame to get L-1B?

I was on H-4 visa from Feb 2014 till Dec 2015. I was on H-1 visa from Dec 2015 to April 2017. In April my H-1B transfer got denied. Hence I applied for change of status from here (April 15 2017) and now my H-4 application is under process. In Dec 2016 (while I was on H-1B visa), I had applied for GC in EB2 category with my employer. My employer told me that my labor has been approved.<br>
1: Is there a website where we can check the status of labor if it has been approved?<br>
2: When can I file for I-140? Is it true that it has to be filed within 180 days of labor approval?<br>
3: Can my GC application continue whilst being on H-4 visa? <br>
4. Does the GC process, at any stage, require the applicant to be on H-1 visa?<br>
5: I am planning to start Canada PR procedure. Will my GC application interfere with Canada PR at any point?

My H1B (6 years) was from 10/1/2004 - 9/30/2010 from 5 different companies.
Company A - PD(EB3) - Jun 19, 2007, I-140 applied on July 9, 2007, I-485 filed July 17, 2007 - got laid off Oct 31, 2008. - I-140 approved on Dec 29, 2008.
Moved to Canada in July 2012 and became Canadian Citizen in Apr 2017. I have been keeping Advance Parole active by visiting the USA every year.
Now I want to add my family in Canada(wife(Indian Citizen with USA visitors visa) and kid(Canadian Citizen)). Do you recommend AOS for myself and Consular Processing for my family?