I have a few questions before making a purchase_[Starling 2 Max GPS-denied Development Drone]

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Our company, 3i(in Korea), develops and supplies software solutions related to digital twin technology.
Currently, we perform indoor measurements manually, but we are exploring the possibility of using drones to automate this process.
During our research, we came across the drones offered by ModalAI and believe that your products may be well-suited to our needs.
Before proceeding, I would like to confirm the following:
Is it possible to connect additional hardware, such as a 360° camera, via Bluetooth or USB?
Does the drone come with basic collision avoidance logic already implemented?
Given our intended use case, would the Starling 2 Max be the most suitable option, or would you recommend another development kit that may be more appropriate?
Do you offer international shipping to South Korea? If so, what are the shipping options, costs, and estimated delivery times?
Are there any export restrictions for this product (especially with the battery and radio module included)?
Could you provide the HS Code used for customs declaration?
Is it possible to receive a proforma invoice for payment processing?
Your advice will help us determine the best configuration for our research needs and proceed with the purchase.
Thank you for your time and support. I look forward to your response.