Confused About Speaker Wiring Pls Help

Hello, I can't seem to find anything helpful on this topic online.

Background:
I am thinking about installing a 3 way component speaker system; dash tweeter with aftermarket mount, 3 inch mid in factory dash location, and 6.5 woofer in the factory front 6*9 location. I would like to wire the speaker crossover for the tweeter and mid into the factory 3 inch dash wiring. The aftermarket 6.5 inch woofer will use the factory 6*9 speaker wiring. This aftermarket speaker set, Kicker KSS365,is 4ohms to match the factory speaker ohm rating.The amp I would be using would be the Kicker KEY200.4

Question: How are the speakers in the doors wired. I know there is a FR+-, FL+-, RR+-, RL+-. However, there are 6 factory speaker locations. Are the front and rear doors wired in parallel, or do the front door speakers get roped in with the front dash speakers in parallel. I'm guessing it's not is series as removing a speaker still allows every other speaker to play. I do not want to have 2, 4 ohm speakers wired in parallel at all as my amp is not stable at 2ohms, so if the rear door speakers are wired in parallel with the back door speakers i know the disable the back speakers and run them on another amp. If the front dash speakers are roped in with the front door speakers than this poses a larger rewiring issue that id rather not have to do.

I'm very new to this, so I may have gotten many things wrong, thank you in advance to anyone who answers.