Hey lowbow12
I'm coming in late to the party - hopefully you've gotten things figured out on this. If not, there's a set of new videos covering purchase, installation, and basic troubleshooting of VoiceAttack and HCS Voicepacks on the HCS YouTube channel (I made them last month, and several more are coming in the next few weeks).
The good news is HCS Voicepacks will read your keybinds from Elite and import them automagically; you shouldn't have to set up any in-game controls AFTER you install VoiceAttack and HCS Voicepacks. As far as I know, there's nothing that your HCS Voicepacks do through VoiceAttack that isn't already bound to your keyboard.
The best practice - from the very beginning - is:
1. Install Elite
2. Set up your control scheme in game - keyboard, mouse, joystick, etc.
3. Install VoiceAttack
4. Install your HCS Voicepacks
5. Adjust your voice triggers for the commands in the HCS Customizer
If you still can't get things to work, or have additional questions, Gangrel over in the HCS Discord can probably help, and I'd be happy to do whatever I can as well.
- CMDR MalForTheWin