Cost of 1st year insurance is higher than 2nd (and each consecutive year).

And yes, your B fund contribution doesn't start until after your probationary period is over.

On the positive side, the nature of the B fund here is great since the company just makes a deposit into a fund THAT YOU OWN. If they declare bankruptcy tomorrow, that money is yours. The current rate is 10.5%.

You can make an additional contribution to a traditional 401(k) that the company will match (6%).