Need some help fine tuning my deck

Just started playing . Hoping to build a gyarados ex themed deck. Need some help fine tuning. Here's my deck now

****** Pokémon Trading Card Game Deck List ******

Pokémon - 12

1 Kangaskhan-EX FLF 78

1 M Kangaskhan-EX FLF 79

1 Lugia-EX AOR 68

1 Blastoise-EX PR-XY XY30

1 M Blastoise-EX XY 30

1 Gyarados-EX BKP 123

2 Gyarados-EX BKP 26

1 Gyarados-EX BKP 114

1 M Gyarados-EX BKP 115

1 M Gyarados-EX BKP 27

1 Regice AOR 24

Trainer Cards - 27

1 Great Ball BKP 100

1 Rough Seas PRC 137

2 Professor's Letter XY 123

3 Ultra Ball FLF 99

2 Evosoda XY 116

2 Gyarados Spirit Link BKP 101

2 Poké Ball KSS 35

4 Tierno KSS 39

1 Winona ROS 96

2 Heavy Ball NXD 88

2 Energy Switch BLW 94

3 Dive Ball PRC 125

1 Professor Sycamore XY 122

1 Muscle Band XY 121

Energy - 21

16 Water Energy Energy 3

4 Double Colorless Energy NXD 92

1 Rainbow Energy BKT 152

Total Cards - 60

****** Deck List Generated by Pokémon TCG Online www.pokemon.com/TCGO ******

Hoping you can help me with trainers and energy balancing some more. If you have a trainer in mind. Please post the easiest place to get it aka if it is from a deck or something. Thx.

I will mention I'm able to win most of the tourneys I enter with this deck so far, or at the worst make the finals 1 out of 2 games.