You're financially ready, but probably not emotionally ready.
1. If you like the job, and don't have a lifestyle to replace it (other than just retiring early)...you probably should work your way through this pre-retirement phase by figuring out your plans for retirement other than the 1 vacation a year. Are you planning on learning a skill in retirement? Then start now while you're working and when it starts to conflict with work, you now have something to do in retirement.
2. If you're still worried about your stash...take this pre-retirement time to pad it up a bit while you prepare mentally. I'd suggest that your ER would not be a happy one if you weren't at least fairly confident that your stash is ready for your plan. Pad the stash a little until you get some confidence. Part of that, IMHO, is ensuring that your stash and withdrawal rate can withstand the option of not living at home. There may never be a time that you leave, but it's better to be sure you have the ability to go if you need or want to.