Good advice from Ben.

We recently finished a rennovation similar to yours (bullfrogs, tadpoles and black water). Pool had sat for several years. It involved a cracked pool, busted in ground pipes, shot pump/motor, sandblasting paint, and some previous shoddy work. All said & done they're bill from us was close to $14k. That doesn't include whatever their electrician charged them to bring the wiring up to code from panel to switches/transformers. In their case, the wiring, plumbing, and equipment had to be done prior to the plaster and tile work. You can't replaster if you can't get the pool up & running right away.
Definitely take your time to get quotes, opinions and advice. A LOT of the prep work you can do and save serious money.