Adjustment of Status - I-485

My wife (U.S citizen) and I ( F1 student visa) got married on November 14th 2014 after 4.5 years of knowing each other. We filled all of documents and send it to USCIS on November 28th, 2014. I just did fingerprint on January 5th and have been waiting for EAD, SSN as well as the notice of interview. I am not scared of these questions that they will ask about her and vice versa. We are nervous about the proofs. We haven't too many proofs like the other couples. Here there are these documents we have:
1/ Joint bank account at Wells fargo
2/ I put my wife's name on my own car's title
3/ Contract of rental agreement (300$-pay by cash)
4/ Waiting for EAD to apply for SSN and then my wife will add my name on her tax return.
5/ Photo album with 200-300 photos about wedding, party, family, dating, proposal...
6/ Cards for Xmas, New year, Birthday, dating...
7/ Receipt (restaurant, buy foods, drinks, supermarket, gas station...)
-No joint phone bills: because when i came to U.S (March 2014), i have had my sister signed 2 years of cellphone contract with Verizon. My wife signed with AT&T => Just wait until the contract ends up.
-No utility bills (gas, electricity, water) : share room with my sister's family, just pay 300$/month for all.
-No joint health insurance: I don't have SSN right now to buy Obama care with my wife. If i had, i couldn't buy it because it was expired. Wait for November 2015)
-No joint car insurance: i got 2 tickets from police. My case hasn't still be resolved in the courthouse. i believe surely that my car insurance will go up as mush as possible after these 2 tickets. I can't buy my car insurance with her.
-No joint credit card
-No life insurance
Is it possible for us to get GC??? Thank you so much