Will I have everlasting life?
Everyone has everlasting life.
What you need to decide is where you want your eternal destination to be - with God or without God. The Bible is clear on that one point - you will end up in one destination or the other - and once you are there you have no option to change to the other destination.
There is no reincarnation. There is no purgatory that you can get prayed or bought out of (Heb. 9:27).