We both met at church and both come from a christian family.
1. That may be so, but are your both born-again believers and living for the Lord? That is the key issue. You need God's blessings on this marriage more than anything else.
2. Since your prospective husband is younger than you and not the primary breadwinner, the crucial issue you face is whether he can be and will be the spiritual leader of your family. If he is a wimp and wants you to manage everything, then that is clearly a red flag.
3. If your parents are genuine Christians they are sinning in making race an issue. So God has to deal with them. You need not concern yourself with this matter any longer, since it is between them and God.
4. Since a formal wedding will clearly become an issue for some (including your parents), you best option is to approach your pastor and ask for a very private and simple ceremony, which you do not announce to the whole world.
5. Assuming your marriage meets the above conditions, once you both are legally married, you can -- if you wish -- invite your parents to your home (don't go to their home) and let them know that you do not wish to sever your relationship with them. So you can ask them point blank if they are prepared to accept your husband for who he is, and maintain a harmonious relationship with both of you. If not then you simply have to accept that as a fact of life and move on.
6. When two people get married they must leave fathers and mothers behind. So if either of you will have a tendency to run with your problems to mama or papa, you are already setting yourself up for disaster. So you both should know each other properly (and honestly) before going through with this.
7. I am in an inter-ethnic marriage (since there is only one race, the human race) and it has never been an issue. In fact it is a non-issue.