Astrology does not endorse caste, creed or religion. Only Man and Woman are the two types of human beings. So your questions are beyond the scope of astrology. If you need a scientific evaluation of your horoscope, you can go through my blog Navagraha Astrology Online and come through Paid Consultation.
All marriages are arranged ones, arranged by God. Love starts only after marriage, before that it is sexual infatuation only.