Title tags - put your main keywords for the page first, or near the beginning.  That helps google know what the page is about.  The number of characters varies as Google does not look at characters per se, but pixel width.  Good article by Dr P.

https://moz.com/blog/new-title-tag-guidelines-preview-tool

You just have to watch what gets cut off at a certain point.  Beyond that length the title is getting too long for readability anyway and if you need a longer title to explain a page, just put the longer one in the H1, but try and be sensible.  If the client insists on putting the company name and you are not trying to rank for the company name just do something like

Keyword and keyword is really key here because it ranks good! | Company Name

The company name is at the end and will get hidden in the serps anyway, and you have your key word(s) or phrase in at the start.

Meta description is about conversion and click through rate vs ranking.  Focus on getting the best call to action with a keyword somewhere in there first.  I would say, this could be a good place to sneak in the company name, after you get your call to action right.  Your limit is larger there (about 150-160) so you have more room before the cutoff.   I tend to worry less about keywords and think about searcher intent and see if I can match that to get them to select my page among others in the search result.  Another good article by Dr P

https://moz.com/blog/i-cant-drive-155-meta-descriptions-in-2015

Cheers!

What we run into often is that on larger sites there 1) still are internal links to those pages from old blog posts etc.  You have to really scrub your site to find those and manually update.  I am only mentioning this as unless you used a tool to crawl the site and looked at it with a fine toothed comb, you might be surprised to find the links you missed  2) there are still external links to those pages.    That said, even if 1 and 2 are not met, Google will still recrawl (although not as often).  Google assumes that any initial 404 or even 301 may be a temporary error and so checks back.  I have seen urls that we removed over a year ago, Google will still ping them.  They really hang onto stuff.  I have not gone as far as the 301 to a directory that I deindex, but generally just watch to see them show up and then fall out of Webmaster Tools and then I move on.

Agree with William.  Show your client the keyword search volume data on searching by city vs by county.   Several of the sites I run have localized pages and we have gotten into discussions about getting more specific by using zip code or the names of neighborhood as we were well optimized for city + service.  Why not  zipcode + service  etc.

It came down to, nobody searches for zipcode + service or neighborhood + service in the areas we focus on.  Yours may be different, so look at the data first, but I bet it will hover at the city level.  You can put it to your client this way, "I can spend a lot of your money on pages that are optimized at the county level and they could even rank for that search.   But if no one is searching for those key terms, then I have just wasted your money and time."

Good luck!

I think you have a good question, but may be making too many assumptions.  Similarweb.com has its own algo to drop sites in a given category.  (Here is the list they use)  http://www.similarweb.com/category    When I look at your site in similarweb - they have an options for you to change the category and so I would suggest you do that (no algo is perfect).

The assumption you have is that if similarweb.com categorized you as "adult" then maybe Google did, but that may not be the case.  Few references on what you should do when you apply to adsense plus the adsense guidelines

http://allbloggingtips.com/2012/08/27/applying-for-google-adsense-program/

http://www.techrez.com/2013/09/how-to-get-approved-google-adsense-account.html

https://support.google.com/adsense/answer/48182?hl=en

It mentioned some other things besides adult content, you need a privacy policy, an about us page.  You have those things at the bottom of your page, but because you have infinite scrolling that loads more products on many of your pages (http://www.wishpicker.com/gifts-for/boyfriend), I can't get to the bottom of the page to click on them.

It just seems like you may be focusing on the wrong thing IMHO.   Are there any other reasons that you would see that someone might categorize your site as adult?  Does not look that way to me when I visited.  Also, I ran your site through OSE and from your top 100 domains, did not see any adult sites linking to you.

Good luck!