You might want to try planting 2 or three.
Peppers are healthier when they can cross-pollinate with other pepper plants.
I grow most of my peppers in pots so they last years. Have to be careful with the habs to keep them from cross pollinating sweet peppers. They're all indoors now and blooming. I always know the winter peppers will be warmish because I don't have room to separate.
You are correct tho, I intend to keep 3 habaneros next spring. Seeds ready to go in next month. I sell plants on our county-wide yard sale day every spring. Last year I only kept the one habanero because they just tear up my belly anymore. 2 weeks after my plant sale last spring I went to Alabama for 9 days with grandkids there. Rain was forecast here throughout my vacay but hubby knew to water if we went 3 days without rain. His mother thought to be helpful, emptied 3 1/2 rain barrels watering despite 5 days of rain. Lost all my maters and half my peppers.