SHELBY GT 350 Member
Joined: Sep 2010
Location: see user name
Yeah the battery you got should be more than sufficient. 590 amps @ 0°F should pretty much cover all your bases, considering that it only draws about 200A when you're trying to start. Regarding Optima, I've heard more bad than good. Highly overrated and overpriced imo.
2001 GT Convertible
All the usual bolt-on's /200 I6, C4
And a few Explorers too... 2008 4.0 XLT 4x2, 1996 XLT 5.0 4x2, 2003 Sport Trac XLT 4.0 4x4