To be clear, 401k and conventional IRA do not "grow tax free". The growth is tax deferred--tax will be due on withdrawal. Contributions are not taxed and serve to reduce tax in the year of contribution.
Yes, this is stated more correctly than I stated it.
But the facts remain that:
1) Your income will not go down by as much as you think it will due to the current year tax reduction.
2) You will not be as tempted to be spendy with money that is in a 401k (I hope!)
3) Since it is automated, you have paid yourself first and then will learn to work with an amount of take home money that includes an automated savings component already subtracted.
4) You will be very happy that you contributed 10 years from now, and at retirement you will ecstatic that young you was so forward thinking.
I know that most people have trouble planning ahead, and many psychological studies have shown this. I also know that most people function as you are now functioning, rationalizing why they can't contribute
at this time with the idea that the money will be better used in another way. It's the "I'll do it tomorrow" mentality that has put the majority of Americans nearing retirement in a pickle.
You probably won't get much, if anything, from that pension, especially if you are not planning to work there 5 years. Also, people seem to be oblivious about this but PENSIONS CAN DISAPPEAR or be cut at ANY TIME! I have a friend who was a major airline pilot, and they cut his pension in half right before it was time for him to retire.
Be wise and save your own money. You don't have to make it an either/or. You can put a portion in the 401k, choosing Vanguard if they offer that vendor, and then save some for another condo if you want. It's a basic tenet of investing called diversification.
And I'll second the suggestion stop borrowing from family and friends.
Good luck!