Bx1holla,
Congratulations. I'm sure you have either read (or will see) a lot of thoughts and cautions on marriage between Americans and Dominicans so I'm sure you've done your homework and are aware of potential pitfalls (and positives) so I'm going to stick to the question you asked.
I'm happily married since 2014 to a Dominican woman I met in 2013. I would HIGHLY suggest you check out the website
http://dominicanstotheusa.com for tons of advice, options and methods. It's the "go to" for advice, very well run from a respected Dominican/American couple. There's a large forum community, all people who have or are going through the exact same thing you're looking to do.
I can say that all the advice I received on that website I used and was very successful in making my situation happen (but everyone's situation is different of course).
Some things in the mean time to think about...
1. As mentioned below by cavok, not having a job will probably present a problem. I would suggest getting that situation straightened out asap. While you may have money now, to an immigration official, they want to know if you have the means to keep your Dominican spouse supported over the long term. Having a steady gig is important.
2. Consider if your fiancé would qualify for a visa (tourist) on her own. There are 'options' for making things move faster (which you'll find out about on the website I mentioned) but some of them will depend on whether she can qualify for a visa to the US on her own. If she doesn't then your only options will be to bring her to the US as a fiancé (and marry here in the US) or marry her in the DR and then petition for her while she continues to live there.
If any questions, feel free to PM me. Either way, best of luck on your future marriage.
Best regards,
-Jim