I tried to run the query with specific tags and even as I am writing this, the query is still loading. I'll just see what I can do with proper internet connection and maybe wait when there's not much people doing stupid things ^^
I am so looking forward for that, in meantime I am exploring all possibilities.
Update : It freaking works now ( right after I hit this post button)
LOL it may just have been the SteemSQL database was overloaded as I suggested. Glad it is working. My new post will cover how to include specific tags from ALL post tags (and not just the category/1st tag). This is actually relatively tricky