So my youth pastor just talked to me about going on a missions trip somewhere out of the country, preferably the Dominican Repubilc, and he said if we plan it, we can go, and of course if it’s cheap enough. Now where are good & cheap places to go on a missions trip? We will get a good amount of translators from our church, spanish translators, so yeah any ideas for fundraising also, anything help would be WONDERFUL.

I’m so proud of your decision to serve a mission for your church. I know God will be with you and he is who you should pray and ask where he wants you to serve, not us. This is your journey, not ours.
But to add to your thoughts of what you need for the mission, check on line with several countries websites and then they have drop down lists of what your looking for. If you can find a website where you can find people who have lived in various places, they may help you by sending emails on the economy of that country, what their needs are, ETC.
For fund raisers there are a lot of options. Have the young men offer to do yard work for older people and quote it for doing the whole job, not by the hour. Some homes need to be painted on the outside and if you go to Home Depot or Lowes and go to their paint department, often times they have rejects… meaning after the color was mixed the client didn’t like it and so it gets reduced way down so it will sell and use that for the inside and the outside. If you live in an area where there are a good number of outside pets, put out a flier that you are going to sponsor a "pet wash" for $5 per pet.
One last thought, it will sound a little off the wall but none the less I want you to do it. Check around and find out families in your area that are Mormon to help you with the service projects to raise money. They always have great ideas and will not expect any monetary compensation. Remember Matt 25:40? (paraphrasing) In as much as ye have done this unto the least of my brethren, you have done it unto me. More people that help you will be more blessings given by our Eternal Father in heaven.