Going into BMT. Looking for some advice on Fiance and training. Help?!

This is a throwaway. Onto business, about 3 years ago my girlfriend and I got heavily addicted to painkillers. To get us both clean, we stayed together, but she moved home. About 3 hours away. I am joining the military and am leaving in two months. While very excited to leave I’m confused on what to do. I have proposed to this girl and love her very much, as does she. We are both loyal and trust each other. I’m going to be gone for upwards of 8 months throughout my training. I don’t want to lose her. We cannot afford to get married at the time but plan to when I get out.

So in all I’m asking a couple questions. Some asking for military experience

1. What are some ways to stay emotionally attached even though we are across the country?
2. When we get married can she come to tech school with me? How does that fare at school? Do people look at you weird? Does it make it more difficult to focus?
3. Any advice from people who have been through military training would be helpful to.

Thanks:-D

(Been a lurker for a while now and just made an account tonight. Along with this throwaway)

TL;DR Going into Military training, questions on relationship during, and advice on BMT.