I'm in the process to upgrade my equipment too, BUT, not necessarily for winning as much as for experience. A while ago I decided to drive in Cockpit view, no matter what. A few cars are a bit difficult because of the A-Pillar size and no matter how much you move your head, you can't see around the pillar....
. The Scirocco was particularly bad at Autopolis at the off camber left hander where the long circuit splits off from the short circuit. I tried bumper cam for a while, but it screwed up my brake points for the rest of the track. So, braking point is important, but with cockpit view your turn-in point is sometimes critical. I guess you learn as you go and get better the more you practice.
Currently I have a G27 shifter connected to my G29 wheel. It is not a great setup and you miss a lot of gears. Once I have a better shifter, my plan is to drive the cars according to the their "real world specs" (Flappy paddles, sequential, H-Pattern). I know I will need a lot of practice because with flappy paddles and left foot braking, my hand and foot coordination will need new motion memory. Up-shifting will of course not be the issue. The issue will be with down shifting with heel-toe braking. With flappy pedals and left foot braking the punishment for bad downshifting is not as severe as when you screw up manual/heel/toe down shifting.
So, in a few months when I finally get my stuff, I might drop down the divisions and then work my way up again as I get used to my new way. Hopefully PD update the manual/paddle shift to be faster. Who did they use in the first place to determine the speed of a manual gearbox shift. Kamakazi's grandmother?