All are OK.
1.a. I wanted you to be one of the first people I tell.-- 'Told' is more natural.
1.b. I wanted you to be one of the first people I'd tell.-- ...but there is nothing to tell.
2.a. I want you to be one of the first people I tell.
2.b. I want you to be one of the first people I'd tell.-- ...but there is nothing to tell.