The Ashtkoot guna milan between you both is 19.5 which is little above 18 that is minimum for marriage. There is Madhya Nadi dosha. Madhya Nadi dosha is a strong Nadi dosha and marriage is not recommended when there is Madhya Nadi dosha. Also the boy is not manglik while you are strong manglik. Also the 7th house of the Boys horoscope is weak and marital happiness is not really promised in his horoscope.