Can i get into BYU Idaho?

Absolutely you can. There are many players on BYU's sports team that aren't Mormon. You will need to know that tuition is higher for those who are not Mormon simply because it is church funded. But from the desires you've expressed, that would be the only drawback. Regardless of what people will tell you because they dislike our church, BYU, BYU-I, etc. are GREAT schools.