How to wire this???

Ive recently got an IDQv2d2 12" sub in a 1.3cuft sealed box. my amp will do 600w at 1-2 ohms and 300w at 4 ohms. My question is this: Ive got it wired now so the amp sees a 4ohm load and puts out 300w and im wanting to know if I should wire the sub down to 1 ohm and give it 600w from the amp. I know the sub is rated at 350wrms but I was told by someone that if you wire the amp to the lowest ohm rating possible and just tune the gain correct its easier on the cars electrical system as well as the amp and the sub will always get nice clean power.

To recap, should I keep my sub at 4ohms or wire it down to 1 and give the sub 600w?

Sorry to sound stupid but im new.