Welcome to KTC Rob! And I see you posted roll already in May - Fantastic! We take that promise very seriously here, never forget that as you push through these first challenging days - one day at a time, sometimes one minute at a time.
Your mindset seems solid, but I want to point out a couple of possible issues that I see. First, you need to know this is not a "habit". Nicotine is a highly addictive drug. That "itch" is nothing more than an addict's (Rob's) withdrawal symptom. Addicts will do crazy things to get our next fix - at some point, the sooner the better, you will need to admit this. There is lots of great information here at KTC. The good news is that after about 72 hours, the drug will be flushed out of your system, but your brain takes much longer to rewire.
You have never quit before Rob. You have just temporarily stopped. You only quit once, and that quit has to be for you - not your job, not your fiance, - you. Hwne you quit for you, your life will get so much better in many ways - not just the integrity (I am ashamed of the lies I told when I dipped), but the ability to be present, and patient with the people you care about.
This is the best decision of your life! I am quit with you today.
CJ