I'm in a very similar position, same earning, similar defined pension (I'm government, and started at age 24, so my pension is ready to go at 55 sans penalty). I've just purchased my first house. I doubt I'm going to tell you anything you don't already know, but this has been my experience...
Firstly, you have about $3k/year of room in your RRSP so definitely be using all of that. You can take out $20k of that when you buy your first house ($25k? was it bumped up?). You have to pay it back within 15 years, but what ends up happening is you save $10k in interest over the life of your mortgage and your monthly payments stay the same, except $100/month is going back to you, not to the bank. Good freaking deal.
You also probably have a fair bit of room in your RRSP from before you started earning big bucks. I'm not certain on when RRSPs start based on age, but I know if you file income tax then they start then. So say you had a part time job when you were 18 (ten years ago). At that time your RRSP limit would have been $13k-$15k per year. Any of that you didn't use wasn't lost, it was deferred, so unless you've done a lot of investing in your RRSP, you still have a big back log of RRSP contribution you can use. So getting to the $20k point shouldn't be an issue of contribution room. And of course, that tax refund is mighty nice (Especially if you reinvest it in your RRSP right away). When I bought my house I left some money in my RRSP. I have two DRIP funds that are doing very well and I wanted to hold onto them and have my $100/m keep going into them. I'm not sure how much of that is sound financial sense, and how much is just irrational sense of wanting to keep holding them.
Your TFSA is limited to $5k per year, starting from the first year you opened it (so if you've had one for three years, you can have up to $15k in it, and if you only have $6k in it at the start of this year, you can contribute $9k this year). I didn't use my TFSA for my down payment or fees. I've got mine setup with ING, and I'm using it to save for some mid-term expenses I know I've got coming (buy out my car) and emergency fund.
I'm a public servant, and while I'm paying $450/month into my pension (why do all the public think my pension is "free"?) I'm not convinced it'll be paying out as well in 25 years as it says it will. Frankly it isn't sustainable as it currently stands and is far too easy a target for politicians. My goal is to pay down my house as much as possible (because it is a safe return and while it won't provide income will drastically reduce expenses), and then move hardcore into income earning investments (dividened funds are my poision of choice atm). For one thing, I want the freedom to leave the government and pursue other goals before 55 without being bound by my pension.
So now that I've rambled, to answer your question: Definitely max out your RRSP. Look at last years tax statement to find out what your actual contribution limit is, and aim for at least $20/25K in the RRSP. Reinvest the tax refund. Do that before contributing to the TFSA. However, make sure you at least open a TFSA so you can start building up contribution room in it. Enjoy Life.
That help any?