Simsa
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I must disagree here. We need to create a team from all the races. Only by being a team can they win! (Besides, I would like to reconcile the two elven races during the narrative, by making Albin and Silbern friends).
Why don't you think about and rework the plot so that the heroes go separately at first (on foot), and then meet at some stages and continue together... Maybe not all four, but two elves... At some point (say, after 5 chapters), one of the elves helps the other in battle (the dark forest elf) or the other saves him from something (the forest elf saves the drowning dark elf))...
Okay, this is just a suggestion... but you think and decide...
Sincerely, Simas