I usually try to have both the 120 power/less accurate move and the weaker more accurate move. I much more often use the weaker move (not only because of accuracy, but to save pp of the stronger moves too), and just try the stronger move when I really need it...but if I literally have one turn, I'll try the weaker move, unless I know it wont work....and that of course is why there are both types of moves! It adds to both the strategy and luck of the games, I guess.
I have 2 Friend codes I use about equally. One is 4055-3723-1345 and the other is 0576 3520 6954. I'll try to mention which one to look for when needed, if I don't then ask.
I try to train pokemon with the best natures and IVs, but generally don't breed for IVs and occasionally use a pokemon that could have a better nature out of laziness (on the other hand I have reset or recaught the same species 20+ times to get the best nature and decent IVs sometimes). I somewhat do EV training, but don't calculate it out so it's perfect, just rely on the chart in the super training thing.