Courtship

I am currently in a courtship and we both love one another. I know the ultimate goal is marriage. One day after service he asked me are we going to this (marriage). I replayed and told him yes were going to do this. Now that we came to that decision he wants to pre plan financially like find out how much will it take to have a good wedding and after living arrangements including furnishing and all. The only problem is we're not engaged yet. Is it healthy or normal to pre plan financially before engagement? He also wanted us to go to different support like talk to others to get info from them on marriage and wedding. Is this healthy or even normal? Are we jumping ahead of ourselves and if so how should we tell the other person it's jumping ahead.