WELCOME TO FUTUREPRODUCERS.COM DREAM63!
For this bugdget there are two possibilities: all software, or software sequencing _ hardware sound generation.
all-software can be interesting, here is what I recommend:
. fast computer (intel is prefered no matter what the other will say, I learnt the hard way) with lots of memory
. a GOOD sound card. I recommend a HAMMERFALL for the money you have it'll go int he budget... SUPER soundcard. the pros use this.
. Cubase VST 32 5.0 (midi sequencer, host for VST instruments, audio recording)
. VST instruments:
Steinberg HALion (sampler),
NI PRO-52 (synthesizer),
NI BATTERY (EXCELLENT drumbox, sort of akai mpc2000XL on your screen), NI AB-SYNTH (synthesizer, different from
PRO52) - VST instruments are opened from inside cubase, very easy to setup and use.
. MIDI controller (between 100 and 500 dollars for a very decent one), basically its a keyboard without any sound, controlling CUBASE and all your VST devices.
There, you should be actually fine for much cheaper than what you thought, and you can compose any kind of music with this setup.
I am sure some people will walk in and say its not good, but believe me with what is listed here you will be fine for now!
The HAMMERFALL soundcards deliver an instant zero (almost zero) latency, it means your software synthesizers will respons very quickly to notes triggered.
Everything will run on the ASIO interface of the soundcard, so you can even record your software synths (VST instruments) into audio tracks, etc.. ready for mastering.
There is also another possibility, which is to buy a REAL sampler and a REAL synthesizer instead of the VST instruments. If you decide to go this route, get a mid-priced Yamaha A4000 or EMU E5000 studio sampler, and a decent synthesizer, such as either ACCESS VIRUS B, or
a WALDORF MICRO Q keyboard (new), or
a NOVATION SUPERNOVA II RACK
everything I've listed in this message is good, soft or hardware. I am sure itll help you in your project, post any question. Good luck!