pokemon soulsilver: what level should my pokemon be at the 8th gym?

[Tarmaster]

Here is my team:

Feraligatr: Lv. 36
Magmar: Lv. 35
Arbok: Lv. 34
Electrode: Lv. 34
Exeggutor: Lv. 34
Pigeotto: Lv. 34

Please help!! I can't seem to beat Clair!