Difficult to advise on.
Weddings are a complex affair and generally considered to require a fairly complete and extensive photography setup - especially if you are approaching weddings with the eye to working in that field. A $1000 isn't even scratching the surface and whilst there are options you can get you'll be rather under equipped in the eyes of many.
Whilst ones photographic skill is key, equipment is also very important - if you don't have the right equipment you can end up being unable to perform in the given situations. For example a low light church with no flash allowed and you'll want flast (wide aperture) lenses combined with a camera that can do very clean high ISO photos - similarly if you are allowed flash you'll still want that fast lens (you'll need that for the AF) and you'll need stands and flash gear.
With your long term goal in mind I'd suggest considering the following:
1) Look around and see if there are any photography businesses offering an intern/assistant/mentoring/apprentice scheme or even be bold and ask up front. This allows you to work and gain experience in that field without putting clients on the line (you don't want to ruin your reputation by ruining weddings whilst you are in the learning phase - even if you're very experienced with the camera itself there is a skill in working a wedding and its best learned without risking your name and the enjoyment of your clients).
2) I would consider looking at the Canon 5D original second hand (or reconditioned). Granted this is another camera body, but the 35mm fullframe sensor is very popular for wedding work for its wider angle of view (good for closer portrait work - esp at times like the reception) and also because larger sensors allow for cleaner high ISO performance. Now whilst the 5D is older and newer versions are out it is affordable with your current budget and changing the film/sensor size is one time where getting the camera early on helps more than getting lenses (since it directly affects how focal lengths appear and what lenses work best in certain situations).
Note that if you follow option 1 chances are you'll end up using whatever the studio has and you could well end up using a Nikon system (the pro will generally expect you to use their gear so that you've the same performance technically as them - and most pro wedding photographers have spare equipment to hand).
Weddings are often a warning bell - its an equipment and photographer demanding area with the major problem that its non-repeatable. If you mess up on the day that's it you can't re-shoot. This is why people who are newer to photography or who have lesser skill or who have an equipment setup that isn't generally considered ready for it are often advised away from jumping in the deep end. A LOT of people think they can and most fail - or they never go beyond shooting one or two small weddings for friends (you might earn a little pocket money there or you could lose a friendship when the photos come back far below their expectations - and your own).