Team Build

Was looking at finally building my dream team and realised that I have no idea how to build EVs or movesets so i wanted to get suggestions here, my team is as follows:
Delta Charizard
Delta Aron
Delta Raichu
Delta Dratini
Delta Metagross (Ruin)
Mega Hydreigon
Any help with movesets and EV’s is well appreciated :smiley:

For sure:
DCharizard
Timid Nature,252Evs SpAtk,252 Speed,4 def
Shadow ball,Dragon Pulse,Sludge Bomb,Frost breath/flamethrower/Shadow Sneak

Delta Metagross Ruin
Jolly/Adamant,252 Evs Atk,252 speed,4def
Ability: Rock Head
Wood hammer,Head Smash+ 2 filler (stealth rocks,for example)

Mega Hydreigon
Modest or Timid,252sp atk,252 speed,4def
Dragon pulse,dark pulse,fire blasi,draco meteor/roost

Have to go,later i ll write for the other members:)