Full Twilio Account & IVR Setup

I need a Twilio account created, configured, and ready for hand-off to my in-house developer. The account will hold two numbers: a main line with an IVR and a direct line for the receptionist. Voice flow • When someone calls the main number they should hear a brief greeting, then an IVR menu that lets them press a key for Reception, leave a voicemail, or speak to a team member. • Call transfers must work smoothly, and I need the ability to pull additional parties onto the same call for ad-hoc conferences. Messaging • SMS must be enabled on both numbers, with my website fully A2P-compliant and approved so users can text us directly from the site. • Group texts and replies to group threads have to function as naturally as one-to-one messages. • WhatsApp Business messaging is required for both inbound and outbound chats, participation in group chats, and posting status updates. Other essentials • Please secure the account, apply best-practice configuration, and document any SID, Auth Token, and webhook URLs my developer will need for CRM integration. • I will need an estimate of Twilio’s recurring monthly cost based on typical U.S. voice minutes, domestic SMS, and WhatsApp usage so I can budget correctly. • Let me know your timeline to complete the setup and your fee (fixed or milestone-based). Deliverables (for acceptance): 1. Twilio account with two active numbers. 2. IVR flow matching the menu above, tested end-to-end. 3. Working SMS/MMS with A2P registration approved. 4. Conference calling and group texting verified. 5. WhatsApp Business messaging enabled and tested. 6. Brief hand-over document covering configuration details and any API endpoints. If anything in this brief needs clarification, feel free to ask; otherwise, include your plan, timeline, and cost breakdown in your bid.