Didn't have a lot of time to play lately, as at the moment, I'm moving to another place. Just wanted to give you a quick update on my Emeral Single Scramble run with Breloom so far.
So far, my experience is that your single Pokémon will be ridiculously overleveld. Badges 1 - 3 were a piece of cake and at the time i challenged Flannery, Breloom aka Sierra 117 was already at level 41. So four straight Sky Uppercuts followed by a Headbutt on Torkoal (which luckily didn't use Overheat) pathed my way to victory.
After that, i decided to go and skip all the optional stuff (i.e. Trick House) and a lot of avoidable battles. Nonetheless, Norman was easy as cake as well. I saved after obtaining badge #5 and will have to take a longer break from now on because I'm moving.
At the moment, my "team" looks like this:
Sierra 117 (Breloom), Level 43
~ Sky Uppercut
~ Mega Drain
~ Leech Seed
Have a great time everybody