Keyboard, Mouse, Headset (Bluetooth, OTG or Bluetooth+OTG?)

[Jake300]

Hi there.

I'm currently laptop-less and I'm using my Moto G 2014 as a laptop replacement. I hang my phone on the wall in front of my desk and I use it this way. I use voice for launching apps and typing (text-to-speech) and a Logitech mouse (http://goo.gl/Q1VqnO) via an OTG Cable and the Logitech Unifying Receiver.

I am aiming for my final setup to include a mouse, a keyboard and a headset (all wireless)
My options are:
- Bluetooth mouse
- Bluetooth keyboard
- Logitech mouse on the unifying receiver
- Logitech keyboard as a second device on the unifying receiver
- Bluetooth headset

My questions:

With multiple devices on Bluetooth might I experience lag or degraded audio-in/out quality?
Anyone here with a similar setup or experience using many wireless peripherals under Android?

Thanks,
Jake