If you use but, then don´t only fear that one chandelure shade has. If you´re comfortable with the rest of that team, you can throw everything at that chandelure, it´s slow and will go down eventually. If not, get surskit. It can learn bubble beam and its evolution can ease the pain with water sport
You´d also fear Charlotte, Hardy and Ciel and most guys using anything effective until you have something to cover those weaknesses. Florianas Cradily could be a pain as well.
Bugs can be more versetaile though, as some of them can be good physically, while others have good potential of being special sweepers. You´ll also get forretress and shuckle, who´re quite bulky, and armaldo and crustle will help you cover your rock and fire weaknesses. Bug-types also have more access to status-moves, so if you can´t defeat your enemy with that pokemon you might be able to at least cripple him (poison him and then try to stall to death? Dunno if that´d work with flobot´s cradily, but it might be worth a try. If not, try to sweep through with cricketune by starting the fight powering up fury cutter. Worked for me ^^). I like bug-types, they´re underrated anyway ^^"
Electric can learn some good moves and have only one weakness, but many pokemon are kinda meh..
Jolteon will be a good choice later one, it´s an awesome pokemon anyway.
And you´re right, in the beginning your options are very limited. Only emolga and electrike, which isn´t much. I think after Julia you could get plusle and minun. They aren´t strong, but at least you can fill your team slots until anything new comes along. You´ll also get a pichu, which will be worth more than plusle and minun once you get a raichu :3
I don´t know that much about electric-types though, but I guess you´ll miss quiver dance, access to poison- and sleep-stats and that. Also less versetality on the moves you can learn and secondary types. But you´ll be able to play more defensively on the long term I think, because if the enemy doesn´t use earthquake or something like that, you won´t get super-effective attacks against you ^^