Battery replacement

Hey guys, I just bought a 2014 4 cylinders Camry with only 14K miles.

Very clean in and out from VA and drove it to FL.

The battery is about 3 1/2 years old. The warranty is only good for 36 months from factory since it came with the car, in other words is original.

But I'll running and subwoofer (small with an amp built in) a dash camera, a portable satellite radio and some times a portable GPS.

There's no problems wit the battery now. The terminals and battery are very clean, it looks like the vehicle was garage most of its life.

So my concern is the battery, should I replace it now?

Also, I can get one from Toyota from $85 to $100 (60-84 months) or I can get an Interstate from Costco for $84, with 36 replacement warranty.

Any ideas?

Thanks in advance