If you're careful with the throttle and rev matching you can shift without a clutch. But it does take practice. Start out slow, rev to about 2,500 then ease off the throttle while putting some tension on the shift lever. Once the gears are unloaded the shifter will move to neutral. The shift...
You could put switches in the windshield trim behind the sunvisor like this guy did.
Look at 23:20 on this video. You'll see a row of switches above the sunvisor. There is a lot of room for wires behind that panel.
Delcity has an excellent selection in switches...
I'd use Rust-oleum Roll Bar and Chassis paint. They claim it's self priming, but I'd use a rust converter under it unless I'm painting shiney metal. Harbor Freight carries it locally.
I have a manual. The only time I played with M or manual mode was at Off-Roadeo. I guess I misunderstood what the instructor told us. I did like how the manual mode worked.
Why are you worried about your brakes if the parking brake is on? You shouldn't be moving.
The M stands for manual low gears, there are two. You don't use them for normal driving, just when off-road and you need more control, especially going down steep hills.
I remember when they charged extra for a radio or electric windshield wipers. I also remember one car, can't remember which, that had aftermarket turn signals, it didn't come from the factory with turn signals. It may have one of my Dad's pickups. JC Whitney sold them. Some cars on the road only...