I would say you could given the info you have provided, you'll have 600k, your house and more importantly a DB Pension of 45kpa.
The real questions are why you want to retire and what you want from your retirement and do you feel you can achieve this with what you've got.
For me it was a decision that took 4 years of planning before I made the jump and it was a big jump down, having said that there isn't a day where I have regretted my decision.
I am happy and that's what counts.
This for me was the key, I wasn't happy now I am.