Your images are blurry, which is for the better. I assume they will be removed since they contain sensitive information.
Personally, I don't see anything wrong with the warrant or the deputy's reasoning.
The warrant contains the typical elements including the deputy's experience and training. The information listed is sufficient to support that this deputy was familiar with this type of criminal activity and investigation. Despite your perception of favoritism, the deputy does have the required training and could back it up with documentation.
The garbage pull was done once the trash was at the curb. I don't see any issues with that. Indecia with the occupant's name was also pulled from the trash.
The deputy did an initial test that showed the presence of methamphetamine. Personally, I agree that this, coupled with the information he already had about alleged trafficking, is enough to support probable cause for a search of the property and person. Additional testing to be CERTAIN that it was methamphetamine is not necessary to have PROBABLE cause.
This is a very basic and straightforward warrant. I don't see any complex underlying issues. I'm sorry, I don't see a way that you defeat this warrant with the information provided. You should trust your attorney and try to minimize the damage rather than try to escape it.
For what it is worth, as someone who has often authored this sort of warrant, I have never found a judge who did not scrutinize every letter on the page. I have never had a judge deny a warrant request, but never felt I was getting a rubber stamp either. It is because of good work and good training that these warrants are granted, and why they are difficult to defeat.
Just to add, even if the warrant was defeated, if someone on the house was on probation and had search terms the evidence may still be valid, depending on local rules for how those searches are conducted. Having a warrant makes the whole thing a lot cleaner- but they aren't always required. Better to have and not need than to need and not have.