C.G.
I'm the same age as you are, with and 11 yo, 3yo, and one on the way. We got pregnant before our wedding but kept the date, so we've been married 12 years BUT I was mega-prego at the wedding. We got some help from our folks but did everything super cheaply.
The best advice i can give you is to take the help from well-meaning friends and amateurs. For a wedding planner: do you have a female friend, relative, or coworker who loves to plan parties, events, or is obsessed with weddings? She (or possibly he) might enjoy doing this for you. You won't get all of the services of a pro but it's usually more than enough to make it special.
Photography is really important because even the best looking wedding can look bad in pictures, and vice versa! You usually have the pics for a long time after the event. I hired a good friend who was studying photography to do my daughter's photos--she got stuff for her portfolio and experience, and I got a great deal. But you don't have to know anyone specifically, you can contact a local art school and ask for a referral to one of their students, or sometimes they will post the job opp for them. Even if you go with more experienced people, your best bet $ and quality is to use a freelancer.
Food you can save on by using catering services of a local deli or even grocery store deli. Liquor can be a pay bar if you want to provide alcohol but can't afford to set everybody up. Caveat though: you really should pay for at least one drink for anyone who stands up with you or donates any services to you.
Flowers, real or silk? You save a ton with silk but NOT the same experience. If you're willing to be flexible in your choices, a good florist will recommend what flowers will be least expensive at the time of your ceremony. Some blooms cost more in November vs April, for example.
That's all I can come up with off the top of my head. I'm new to the area so i don't know any wedding planners, but it is an expense worth skipping--there's SO much information out there that you really can do it with a little help from your friends.
;)Best wishes y que dios te bendiga!