These moves are good, but three of them are only Grass-type moves so far. If you want to strengthen it to beat two of its weaknesses, then I can tell you the moves that you can use.
Aqua Tail (helps defeat Fire Pokemon)
Iron Tail (helps defeat Steel Pokemon)
Giga Drain (replenishes your HP and defeat Ground, Water, and Rock Pokemon)
Dragon Pulse (can help against Dragon Pokemon)
The three new attacks are taught by the Move Tutor, so you can get these moves to help you defeat any Pokemon. I hope this helps.
Long-Time Pokemon Fan.