You may have more troubles than you realized

Since you obviously have no intent to live in Canada (by sneaking back to US and the sole purpose to go to Canada this time is to regain a US visa, you may be refused an entry to Canada if they realize that.

So, you have to accept the fact no attorney can gunrantee that you can get a H4 visa, even you pay. Plea to VO sincerely based on family reunion ground may be your best chance.

Now what a lawyer can do for you is probably to argue that the past more than 180 day in the US is not a illegal stay. I am not sure how this work, you need to find a good and reputable attorney for that.If that fails, you are likely to be banned for 3 years. Judge was right as she/he don't need to impose that ban. But the ban was built in into the law and will be enforced by Visa Officer.

You need to think of a backup plan -- such as land a decent job in Canada, that may increase your chance to get a visa to US.

You have repeatly chose "shortcuts" which turned out to be very costly. Now the waiting 20some days for visa in Canada looked like a real bargin, isn't it?

Don't make that mistake again.

Good luck