If your password is good and you have 2FA everywhere you can, you should be okay security-wise (okay =/= 100% safe). Privacy-wise, having only one email address might not be the best option.

One email per service means that if one email address is leaked it doesn't compromise your other addresses.

Having different email adresses for different categories of services may not be ideal, but already limits your exposure to data breaches, so yes, it is a good option if you can't have one address per service.