Just do it!

Yes, you might screw it up.
Yes, dreaming can become quite costly.

On the other hand, what do you really have to lose? It's a 25 year old middle of the road hard tail mountain bike. It's a PERFECT platform for a personalized bike conversion. If you do it all yourself, you'll learn things about bike mechanics and paint that you don't know even exist today. You'll also get the satisfaction of dreaming up a concept and seeing it through. People who go around saying things like "If it ain't broke, don't fix it." don't get that.