This is surprising. You found a contest that isn’t happening until August 2019 that has already announced all the events and weights? I’ve never heard of such a thing.
But, I’ll roll with it.
The weights are really weird. Relatively speaking, that’s a very light log compared to the DL. 200kg for reps, as a lightweight? Damn.
I’ve thought about this from a couple angles… So, I only train for specific competitions about 2-3 months out from them. You’re not going to spend the next year and a half training for this one. But that being said, these are all very classic strongman events, and are great ones to get started with. You HAVE to learn log, stones and farmers for strongman. So that’s great.
The way I generally structure my programming is by doing mostly barbell work (like 5/3/1 style) 3-4 days per week, and then spend 1 more day on event training. My event training will usually be something like log press, stones and farmers. you could do them all in one day. My event training days always involve an overhead press (log, circus dumbbell, or axle), a carry of some kind (yoke, farmers, frame, sandbag, keg, etc), and then usually a miscellaneous event. Could be a toss. could be stones. could be a DL variation. I kind of just play around with this.
I would do a lot of work in the low reps with the stones, and probably not practice them more than once every other week for awhile. They really tear you up, you’ll need recovery between sessions.
Practice your farmers walks with a weight you can run relatively quickly with , and progress by adding weight while maintaining that speed from week to week. So, for example. Let’s say you can run 20m in 9 seconds with 55kg per hand right now, but with 110kg per hand, it’s taking you 25 seconds. Don’t practice with contest weight. Practice with the more manageable weight. Do like 3-4 runs with that. Then the next week, add 5kg per hand, and as long as speed is still good, keep raising the weight from week to week.
Familiarize yourself with the log. Learn to roll it up your body. Watch a lot of pro videos. Post videos of yourself to get assistance. Don’t try to do this like a barbell clean.
That should get you started, let me know if you have more specific questions.