I have just arrived here and feel like I'm a little late to the party!

Though my FI and I have been talking about marriage for over a year, we just got engaged this week (on halloween, which surprised me!) and have a date of March 23. We wanted a short engagement and as we are having a semi-small wedding, I know it is totally do-able. But, I keep thinking--it's only a little over 4.5 months away and there's so much to do! My next priorities are finding a dress (of which I have ideas for and am not super picky about) and figuring out the venue for sure. Again, that's not a huge issue for us--it might be at our small church, or in one of our parent's backyards if neccessary. We decided the date was more important to us than the details, so we're choosing to work it out no matter what!
I have lots of ideas, a circle of family and friends willing to help and lots of DIY inspiration from pinterest. I know that I need to get invitations out about 3 months in advance because we can't do save the dates, and making sure we have food, a venue and attire nailed down ASAP. Any other tips of things to focus on to get things in order??