Well, sounds like a family meeting is in order, and the point must be made that everyone needs to be pulling their own weight. RIGHT NOW you are a SAHM, as am I, so many of these things are our "job" right now, but so is teaching the children, and they both need to learn responsibility, which happens through having assigned/expected chores daily. Make sure everyone knows this is a family and all must pitch in for everything to work more smoothly (and mommy not to go nuts), and this next year and a half is going to be an evolution/practice time to get everything going smoothly for when you will be working again.
The 14 yr old can definitely do more than dishes, even with sports and homeowork. When I was 14, I did all vaccuuming all dusting ( in a 2800 square room house) , all laundry folding ( family of 4) and putting away all the dishes, and mowed my grandparents' yard. Plus keeping my own room clean, doing my homeowork, and being in band, choir, volleyball, and having 8 academic classes and no study halls. It CAN be done, and I even still had friends and fun! I would say you need to start a schedule/routine for her to help, now, before you go back to work and are STILL expected to be the maid and cook for everyone. Add on a chore at a time, maybe add a new one each month as she masters/gets self-sufficient at remembering to do the previous one- don't forget to praise and thank her when she does do them well. And maybe give her some choice in the matter - if she would prefer to put away clean dishes rather an fold laundry, etc. My parents had a rule that homeowrk was first, chores second and then fun time ( TV, Friends, etc.) were last and only if the first 2 were completed - I intent to use the same rule with my kids when the time comes that they have homework and want to do friends stuff on school days.
Also, do her a favor and teach her to cook, as well (that is something my mom didn't teach me and I have had to learn as an adult from trial and error and cookbooks). Start with one meal a week ( maybe Saturday or whatever day is the least "busy"), by having her help you cook, then after a while, start giving her a recipe and all the ingredients and you just supervise (while maybe sitting at the table and planning next weeks menu and groceries), then later have her decide what to make and make it herself (this should take about a year to get to the end point).
As for Hubs trying to tell you what to make for dinner - plan your dinners ahead, post it on the fridge, and buy groceries for that plan, and tell him - "Sorry hunny - this is what I have the groceries to make this week - if you want that, you will have to make a trip to the store and then cook it yourself. I want to keep us within our grocery budget, and I am not a short order cook." Or even put the food in the oven or crock pot before he gets home so you can just say - "Oh, sorry, such and such is on the menu tonight and it is already in the oven!" Tell him if he wants some input on the meals, he can help you plan them, or do the grocery shopping for you, or even cook whatever he wants (as long as he has bought the ingredients for it)!
And yes, as someone else said, make sure to start the little one early - with folding washcloths or towels, putting away tupperware or silverware, dusting low things with a swiffer ( they LOVE that) putting away his own clean clothes into drawers/closet ( get a lower/extension rod he can reach - a shower curtain rod with spring tension works well) - cleaning up any of his own potty accidents or food spills as best he can, etc. That way you won't have this same issue in 10 more years again.
Good Luck, I hope you can get your Hubby and big girl on board.