Since you're super cheap you can't really afford anything they said. Maybe wheelie bars if you're really handy but if you are you probably wouldn't have asked this questions.
PLEASE CONSTRUCT WHEELIE BARS CAREFULLY! They become your entire rear suspension once you launch and you can't have them fail unless you like getting into the wall.
Other things to consider for cheap are limit straps and block the rear end. IE make the rear end solid. I'll leave it up to you on how you do that.
Oh yea, Koni's will NOT damp 1000lbs springs and GR-2s and other really cheap shocks are even worse.
PS...1000 pounds springs don't limit the weight transfer, just pitch angle