Big update. Like three or four days of playing.
First off, I started my Water Monotype run with a Totodile, named Sawyer. I did the initial stuff, you know, Mystery Egg, Pokèdex, and meeting the Rival (later named Douche).
So, with everything I needed, I made my way to Violet City, and I challenged the Gym Leader right away (training with the speed button is a God-send).
Thus, I received the Togepi Egg and went to Route, to catch my second team member: Janine the Wooper. With her, the TM for Mud-Slap and some training, I cleared the Sprout Tower, and did the rest of Route 32. I got the Old Rod, and with him, two new team members: Leviathan the Magikarp, and Winona the Tentacool.
Once I got to Azalea City, I cleared the Slowpoke Well from Team Rocket. Then, I felt like I needed a lot of training, so I spent a couple of hours by grinding Leviathan up to Lv. 20, so he could evolve.
So yeah, once he evolved, I smashed the Azalea Gym, and the Rival, right after that.
I got myself through Ilex Forest and Route 34, where I finded my fifth team member: Damien the Poliwag, which got lots and lots of training 'til he reached Lv. 25 for the evolution. Poliwhirl was very, very helpful with the third Gym, having Hypnosis, Rock Smash and Ice Punch.
Once I reassembled the levels on my team, it was time to meet the Rival at the Burned Tower.
After that, I got the life-saver of this team, the HM03 for Surf, thus I challenged - successfully - the Gym Leader of this town.
After LOTS of training, and catching the last member of my team, Poseidon the Staryu, I decided to hack in two Water Stones, but for right now, I'm only evolving Poseidon.
As I was saying, I reached Cianwood City, and I got the Secret Potion. But for now, I needed to challenge the Gym Leader. So I did, with my trusty Leviathan (which has rocked in a lot of Gym atm).
The Secret Potion was delivered successfully, and therefore, Jasmine, the Leader of the Olivine Gym, offered me a challenge, which I accepted. And I won it.
With my sixth Gym Badge in hand, I went through a lot of training, passing through Route 43 and the Rocket Hideout.
Then, I got to face Pryce, the Gym Leader of Mahogany Town. Luckily, my new Poliwrath did the job quite easily.
I received a call, with Prof. Elm saying something about the Radio Tower... I went to check out, and I found a lot of troubles there. I cleared the house, and meanwhile, I met my Rival. Once again.
Then, I found the Boss of all this mishap, and I made pieces of him.
And for right now, I call these some days. :D