It may be helpful for you to describe some of your “wants” in a pool or things that deal breakers. This way we can provide pros or cons to those. Also, describe if you wish it to be a sports pool - low end on each side with deep in middle, or a exercise pool with swim lanes, etc. Also do you wish to have a spa?
Are you considering a gunite pool with plaster, a fiberglass pool or a vinyl pool? This will drive certain decisions for construction process.
One recommendation is to have it as a salt water pool which will make it easier to maintain and to ensure properly sanitized. Do not get a UV or a mineral sanitization device that some PB’s try to push. A good saltwater chlorine generator (SWCG) is worth their value over the long term to provide a truly trouble free pool.
Also include if you have young kids or older parents that will be using the pool. All of this helps to guide various options to a pool.
For one, there is no “standard” pool that fits all but there are common elements that are useful.
Also, get 3 bids so you can compare pricing and most likely there will be different types of equipment offered by each. The big 3 - Pentair, Hayward and Jandy are all good equipment but each has their strengths.
Look forward to following your build process.