If you don’t have retiree health insurance, then I don’t see you as being handcuffed. I see you as having not met your retirement number. I was “handcuffed” until 55 because my company did offer retiree HI at 55 which includes a generous subsidy even through my Medicare years. That was a huge benefit. Since you have nothing like that to lose, it’s just a matter of how much are you willing to spend to be able to retire in the manner that you envision.
As others have noted, check out your options and see if you can cover yourself until Medicare. Once you hit Medicare, you’re in no different position than you would have been in had you worked to 65.
In your research, don’t forget to look at all options consistent with your health status. For example, if you’re relatively health, maybe a high deductible, lower cost plan would suit you well. There’s some risk there but manageable given the limits on any plan you might buy.