discuss finances and the house
Listen much more than you speak. Remember at this point you are adversaries. Each of you is going to want the 'best deal' in the divorce. I don't mean taking each other to the cleaners, just that there are going to be specific things that you want, in finances as well as material possessions.
So, don't give him ammo. Don't show your hand. Find out what his 'expectations' are and then decide how much to tell him about what you want. (Answer: nothing) Frankly, I'd tell him I wasn't ready to discuss things and then see a solicitor first. Some men get very anxious to 'make a deal' at this point, usually to their own advantage. They may seem to be acting very generously, but in the cold light of the next day, they rarely are.
Above all else do NOT agree to anything, even if you think it's 'fair' or 'acceptable'. Even if it falls into 'what you want'. Your answer to everything needs to be "I'll need to think about that". Because things and needs change and you need time to really consider what is right for you as well as what is a fair division. Any 'offer' he makes needs to be run through a solicitor.
My cousin almost accepted what seemed to be a 'good' settlement, only to find out from her (US) lawyer that she was actually entitled to about 25% more of joint assets than he was 'generously offering', as well as higher child maintenance AND spousal maintenance for 3 years to allow her to rebuild her career.