Gyarados question

I have many Gyaradoses, as Magikarps are really common here. The 2 low IV ones are both wild Gyarados catches. I have 2 more wild Gyarados catches, but both are sub-400 CP.
1: CP 3008 IV 95 (15/15/13) DT/OR (maxed for my level)
2: CP 2776 IV 91 (13/15/13) B/C
3: CP 2756 IV 84 (13/13/12) B/DP (legacy)
4: CP 2641 IV 46 (13/08/00) DT/HP
5: CP 2173 IV 88 (14/14/12) DT/HP
6: CP 2072 IV 48 (12/03/07) B/HP
7: CP 1991 IV 88 (15/11/14) B/T
8: CP 1907 IV 93 (15/14/13) DT/OR
9: CP 1836 IV 82 (14/10/13) B/T
10: CP 1670 IV 93 (13/14/15) DT/OR
11: CP 1668 IV 91 (14/12/15) DT/C
I also caught IV 93 (14/14/14) Magikarp yesterday, CP 107.
I have about 350 candies now. Shoukd I get the last 50 candies to evolve the IV 93 Karp, or should I power up any of my Gyaradoses first?
P.S. I caught the IV 93 karp with my very last poke ball. At first when I saw the appraisal, I thought I caught a perfect karp!