Is my retirement math actually adding up?

Thinking of retiring at 63 with $300k in my 401k, then drawing it ALL down before taking social security at 70 ($4400/mo). Wife would take hers at 63 ($1600/mo). That's $6000/mo combined in our low-cost area of Indiana. But wait...what about inflation? Healthcare costs? Am I missing something obvious here? My financial anxiety is real! #retirementplan #socialsecurity #financialindependence