I'm with Gibby. I'm in Dallas, drive an 09 with no oil cooler and can count the number of times I've crossed 220 on one hand. One of those being a straight line run to 150 mph (on a closed course of course
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If you're only gonna track every once in a while I would get the sways too. You'll feel that benefit every time you drive the car. The oil cooler will only benefit you on track days for the next 3-4 months.
And my stock end links connected to Hotchkis sways lasted about 2.5-3 years before they broke and I replaced them with SPLs. It's probably easiest to replace them all at once but not necessary if you're crunched for cash.
I should mention my commute is only 5-7 miles depending on the route i take so its not often I have an opportunity to drive long enough, once the car has warmed up, to get past 220. With the weather we've been having lately I'm lucky to get to 180 without waiting in the parking lot at work for a bit before going in.