I do have a 6iv Ditto and yeah you pretty much nailed it, I'd rather find an easy way right now. Even with that 6iv ditto there is no guarantee I will get a 5iv missing the stat I need within the first few rounds of breeding unless I had the non-ditto parent being 5iv. I'm a bit flustered with VGC so far bc when I was in the higher ranks everyone was using almost all ubers which was pretty annoying.I wanted to reply to your original post but you've gone and edited it so I can no longer see it. Anyway...
You're too caught up in using things you have on hand, you need to be more flexible and willing to breed more (perfect) stuff. Having 5 perfect IVs in the relevant stats (missing the non attacking stat) is what you want to aim for. I don't want to sound harsh but you need to realise that breeding is an important part of the game and you can't be lazy about it just because it takes ages. If you haven't already got one, go and get a 6iv Ditto from here which will speed things up for you. For information on what is being used in the metagame go here, you will find stuff like the top 12 most used Pokemon and what their most popular moves / items / etc. are so you know what to prepare for, you can also look at things that you like and use their most used moves and stuff yourself. Lastly, use Pokemon Showdown! to practice before spending the time to breed. I did say not to be lazy when breeding but I fully understand how disheartening it can be to spend that time and then find out it doesn't work.
For Pokemon sets, I strongly recommend looking at the Smogon Strategy Dex (located on the home page). Even though those aren't Battle Spot specific sets, they translate their effectiveness here.
Looking at what you have available; Scizor, Gengar, Charizard and Dragonite are all very good to use here, and they all have several good sets to consider so I won't suggest any here. The changes you've made to Gengar are god, except Black Sludge is silly. You won't be on the field long enough to recover much health, I would maybe give it a Life Orb since Greninja has the Sash, or give him the Sash (and Destiny Bond) and give Gren the Life Orb
To answer your question; yes smogon does have a Tutor Program, although I'm not exactly sure on how it works since I've never done it. I'm sure if you look around there or message one of the mentors you will find what you're looking for
I just added showdown, and the team seems to be doing all right.
Also, I can't figure where the top 12 pokemon being used are as you mentioned. And if you noticed, alot of my builds came from the strategy dex, and of course they didn't translate over well.