Can I file i-130 and i-485 together?
Yes, this is called concurrent filing. You can also file I-765 and I-131 which will allow you to work/travel during the approval process (once those specific petitions are approved).
OPT expire June marrying in May/June suspicion?
Not if you provide good evidence showing that the relationship is genuine, but honestly remember that your legal marriage and social wedding can be on different days. It can take quite some time for the I-765 to be approved so I recommend not waiting till the last minute.
Can we move to a different state while it is processing? for example, we live in Kansas and decided during the process, we want to move to Arizona?
Yes. I moved across the country during my AoS process.
When we file for i-130 and I-485 can we also file I-765?
Yes
What if my parents never met my bf but only through Facetime? Will that be a issue?
My parents met my husband for the first time after we had already been married for six months. It wasn't an issue.
Form I-864, Affidavit of Support, how much annual income for a marriage green card?
125% of the annual federal poverty guidelines for a household of your size - for two people in the contiguous states that's $24,650. More information here: https://www.uscis.gov/i-864p