The guy wants advice regarding the legalities of marriage,visa and conversion, not English! The arrogance and shallowness of human minds never ceases to faze me.
Brother AbdulKader hope you Insha Allah find your solutions. I have no idea,sorry, about the visa situation and marriage formalities but I do know in Islam getting your parents approval for marriage whilst is a good thing, is not obligatory and it's better for you to do the right and just thing and marry your partner asap. Conversion is not an issue here, and places like FANAR will provide you with much help and advice.May Allah make it easy on you. Barakhallahu feek.