Describe the ceiling you want to keep clear
Explain where you want lighting, storage or another feature. The installer needs to understand the intended use of the space, including any future changes. A compact opener is useful only if the completed layout supports the way you plan to use the garage.
Let the equipment assessment lead
The existing door configuration and available mounting space need review before a specific unit is selected. Avoid relying on dimensions from a similar installation online. Ask for a clear explanation of why the proposed model suits the actual system at your property.
Include the less visible work
Clarify any electrical, mounting or other preparatory work that is outside the proposal. Discuss the location of user controls and how equipment will remain accessible for future service. The finished plan should cover practical access, not merely the appearance of an uncluttered ceiling.
Your questions
Will changing the opener remove every overhead component?
No. The door and its supporting arrangement have their own space requirements. Ask to see the complete proposed layout.
Should storage racks be installed first?
Coordinate the two projects. Finalizing racks without considering door travel and service access may create a conflict that could have been avoided.