1. The important question: Do u convert coz of him or ...? U should ask urself. One converts coz they find the truth, not coz of loving someone. Otherwise, it won't last longer.
U should put Allah 1st above everything. I think inside of ur heart, u know it well.

2. I agreed with 'Lev' that u have to know him well due to different cultures. Love is not everything.
Married is not playing & it's a lifetime.
It's true that many people happily married even their cultures are different, but never compare urself with others. This is ur future and u r responsible of it.
Once decision is made, hope u won't regret it later.

3. My advise, just take ur time, oversee everything, think clear with your head and the most important: pray more.
God always gives u the best.

On the end, everything is in ur hand. God bless u & wish u all the best.