Champion pool bronze to silver

Hey, So basically I'm a bronze player :( To get out of it I decided to make a champion pool of 4 champions. They told me to pick champions I liked and that are good at early game. So I made this : top lane: renekton, gnar mid lane: annie, syndra Is this a good champion pool? I know renekton and Syndra are hard but I already have played a decent amount of games on them.
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