You may have better luck than I did, but I found that it can be unreliable with group messaging. I've got a group of about 5 old friends that all chat together daily and the messages kept coming out of order.
We found that GroupMe is the #1 when it comes to group chatting. You can have multiple groups going, full size picture sharing, and plus you can use it from a PC if you don't want to chat from your phone.