Some updates:
I have received the Goodyear Supercar 3R tires last night (crazy fast shipping by TireRack) and learned they sent my TPMS sensors and the 19" Apex wheels will be here. I am hoping that I can have them installed it sometime next week.
On a side note, when I picked up one of the tire, it felt like a bit wide for a 305 tire and light. To see if it's true I put them side by side with the 315/30/18 RR tires and surprisingly these SC3Rs are about 8-9mm wider than the RRs. I will measure them once they're installed but I am not sure if it's going to make a big difference.
Interestingly, according to TireRack, the treadwidth of the 315 RRs are about 10mm/0.4" wider than the 305 SC3Rs on the same measured rim width (11") so another typo and we have another cheater tire maybe?
I will report back when I have the new wheels/tires installed.
SC3Rs are also only .6lbs heavier than those RRs even when being wider and much taller than them
Other than the RR set that's already installed on the car I will have 2 additional track set and the OEM wheels/tires so it should be enough for this season.