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Hi guys, sorry been off lately.
So to keep you guys updated, we are looking for a second opinion this week from another lawyers.
The firm's name is Olalere Law Office. (Idk maybe you guys have some idea who they are)
We're having a conference call with them soon and i shall keep you guys updated about it.

In the meanwhile I've been digging for other alternative to get my family there.
I've heard about "OlyMel" recruiting people around the globe to work in their factories, which i might give a try.
Application takes about 9 months, with a 2 year contract to work in CA.
So if this is our last option, i shall apply for this, and while waiting for approval, my 2 non-Canadian kids will apply for TRV to travel with my spouse. (shall get it within 4 weeks if okay)
Then wait for me to get the approval from Olymel. As soon as i get it, my spouse takes off with the kids and keeps me updated whether she got reported for not meeting RO.
If she doesn't, perfect! She stays there and wait for me to come months later. And i shall do the necessary there in order to get my PR while working for the meat factory.
If she gets reported in the other hand, i wont go to CA to work, and she'll just enjoy some days there with her family and get back to our country and live on.

Best of luck to you!

One thing that may be a red flag with your new plan is having the kids travel with your wife (should they get TRVs), since her RO issue will make it highly likely for her to be scrutinized, having 2 other people on TRVs will cause additional doubts. Border officers will obviously have the idea that the children will be overstaying their TRVs. If you do succeed in acquiring their TRVs, be prepared for the very real possibility that they (the kids) may be denied entry at the border/airport/wherever they plan to enter.
 
Also you will have a big problem getting a work permit because you have to declare your wife and children and they will know this is not a temporary visit to Canada. Don't pay if they are pro,idimg you a visa.