Your team looks decent, and if your Quilladin has Bulletproof, I don't think you should have too much trouble with the PULSE Tangrowth. I'll warn you that Ledian will become pretty bad later on, but most of the early game Pokemon are pretty bad when compared to the stronger stuff you'll be able to get later on. I'd recommend lowering Quilladin's level a bit and try raising the levels of your weaker Pokemon, though, since there's still a few trainers before the next Gym.
Acid Spray (I'm guessing you mean Acid Spray, at least, since that's the only move that fits the description) is useful, but not necessary, so don't worry.
You can get Eggs after Tangrowth by repeatedly talking to the Daycare Couple until they reveal themselves to be Team Meteor. You'll have to fight them, and they'll leave. Then, go back to the Park where the PULSE is, and you can go into a house which has a key. Use it for the warehouses in Coral Ward, and one of them will have the real Daycare Couple, who will let you breed Pokemon.