PM hotrod182. He's (relatively) close to you and has been using nitrous on BMW's for a while and could provide you with good insights into the type of kit/jets and tuning.
Nitrous is very safe and reliable if set up properly.
Daily: 2013 e92 M3 DCT / ESS VT2 650 S/C / Akrapovic Evolution / StopTech BBK
Track/Airstrip: 2011 997.2 Turbo S PDK / GIAC FBO @ 30psi / GMG suspension build
Beaterz: 2013 X5 3.5 Sport, 2015 Wrangler Unlimited
YouTube Channel: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w