Confused. Want to get married.

I would like to get married as soon as possible to a guy who I like very much and I'm 100% happy with this choice and I feel like I'm making the right choice and I feel confident in it. I feel like my prayers and Duas have been answered by Allah swt. I'm not being forced by anyone. We have both established that inshallah we are to marry. However I've know this guy for about 4yrs. There was no one I ever felt compatible with apart from him. I respect him very much. I've always wanted to get married to him however the timing was never right but now I feel the time is perfect.

I have expressed to MY family our intentions and they have given us their approval .

However his brother has told me I'm not welcome into his family because I am not Arab. This hurt me but it's only made me more determined to get married to him. Why should I let a racist stop me from getting married.

His brother constantly sends me abusive text messages. Saying that I'm inferior to him because I'm not Arab. He says that his whole family will hate me.

Now the man who I want to marry has said if we are to get married there has to be a waiting period (he cannot give me a exact length of waiting time) he has been advised by his brother and cousin that because it's a love marriage and not an arranged/forced marriage we have to wait. Otherwise we are doing it the haram way. Is this correct and can anyone advise me if this is what Islam says. I don't want to delay nikah. However I don't want to displease Allah if I rush into marriage.