Good luck. I can say from experience that if you want to reach your goal you're going to need to have a full list of places to market/advertise it in order to maximize your view count for the campaign way before you actually go live with the project. This goes double for Kickstarter since they have a policy of you either reach your goal and get your money or you don't and get nothing.
For my thesis film in senior year of college I did an Indiegogo campaign and managed to raise only a couple hundred of dollars for it. However I had managed to raise a decent amount outside of it through way of friends, family and other means (it was a period movie so literally everything had to be accurate from props to costumes, hair styles and locations so it cost quite a bit). I had a big list of places to advertise the campaign but still came up drastically short but since it was Indiegogo I was able to keep what I raised.
Here's some unsolicited advice that may come in handy for you:
- First things first you really need to put a lot of effort into the video. Treat it almost as its own mini movie. You want the viewer engaged in it. The higher the quality is the more interested the viewer is and the greater the chance they will contribute to your project. Don't just go out and shoot a video! Think about what you want to convey, how you want to convey it and where you want to convey it. If you're just sitting in a room talking people will lose interest fast. Show off your Halo stuff right off the bat and do it in a very cool way!
- Set a reasonable budget. It seems dumb but aim low miss low. You try and set a super high budget and people will think you're crazy. Set a budget as low as possible and if people think your project is worth funding they'll continue funding after you reach your goal. If/when this happens have stretch goals set and ready to go!
- Know your perks and set a realistic time to send them to your contributors. From what I saw up above it looks like you have some interesting perks. Be careful you don't under value them. Depending on size posters aren't cheap, neither are DVDs/Blu-rays after bulk disc purchases and cover slips. Additionally 250 for a raw gun isn't unreasonable but how much is your time worth and are you using a good amount of that money to the movie or the perk for the person contributing for it? Lastly have a basic idea when you think these will be ready? Push it further by a few months. Say you plan on releasing the perks in January, change it to April. Things happen, your movie gets delayed being made or takes longer than you thought. Now your perk release is pushed back as well.
- When writing your write up be sure to market the hell out of yourself and why this project is important but DON'T GO OVERBOARD!! I've seen so many campaigns be written by people who think they are film gods and are experts in their fields yet when I go to look them up they don't even have a Facebook page for their production group or film and have zero body of work. You want to sell yourself but keep it humble and simple. Also if you have any other work showcase it. People want to see that you can do what you say. As for the project its great to show what percentage of your budget is going to what. Some great campaigns I've seen/helped with will have a pie chart showing something like 15% goes to food, 20% to props etc.
- Finally and probably most importantly try as much as possible to interact with your campaigners. Keep regular updates. Whether it be on the Kickstarter page, a Facebook page, YouTube or even a thread here you absolutely need to regularly update people as to how things are going either through pictures, videos or a few sentences. People like to know that you are still there working hard and using their money for what you said you would.
I hope this helps you. I've done/helped with a few of these over the years and have learned from trial and error what works and what doesn't. Best of luck and if you need any other help feel free to ask.