For pvp you only take 15 monster, I’d say you should farm for angelron (leviathan + cherubion), barricadus (blockhead + metalo), shadowlance/luxknight (skullwraith/cherubion + snowjack) and gremknight (gemly + knighthawk)
These fusion monster while not as strong as the wyrms (magma, typhon, omega) and destructor, will open up a whole new strategy to use, from your line up i will use storm fox penguini and the wyrm,
You should starto farm more, btw, to win doesn’t reallyneed full strong line up, just need a good strategy
In pvp it is limited to 1 per species, so you camnot put 2 angelron in your line up
Let say you don’t have any wyrms, you could use barricadus angelron shadownlance luxknight gremknight coldheart kentucky don penguini starter raiho raijin stormfox inferneo/orcow skullwraith chopperbug
That way you could set up a time strike combo, dreamreaper combo, and stun > last stand/showdown combo, as for how you arrange the line up its all on you
The above ark should be less punishing to get then the wyrms, except maybe frostjack x2 which you will need for shadowlance and luxknight, and cherub x2 a bit frustating because they keep sacrificing themselves, but you can always set up a stun chain and weaken them, as they are more common
If you decided to go for the wyrm then good luck and try to persevere, you will eventually get all the wyrms