My m6 habbits, good or bad?

NotmyGTR

Dont see a problem with your senarios. I find 1st gear almost useless myself, unless of course launching from dead stop.
One thing about starting from a stop on an incline.....fwd or reverse, use your e-brake. Keep your hand on the brake, thumb keeping the button unlocked, ease out the clutch until you reach your engagement point (you should have peddle distance committed to muscle memory by now)bump your gas, and drop the brake handle and you should be smooth as silk. This completely eliminates clutch wear(burn).
The military base I lived in Yokohama, Japan had an incline at every security gate, the e-brake quickly became my best friend when having to stop and show an I.D. card. At least you are only dealing with a single plate, I had an HKS twin plate in my skyline..........and it sucked at first.

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1996 Skyline GT-R LM fully tuned by Mines/2006 Nissan Titan 5.6 SE Texas Edition/2009 370 Base w Sport Pkg