Things you can do right away is.....
Wheelbarrow handles to the base.
A simple roof rack on your car
A set of cheap folding aluminium ramps
The wheelbarrow handles are an easy modification doesn't have to be too flash at first as long as they do the job.
Throw the aluminium folding ramps on the roofrack for traveling.
Best thing I ever did was remove the back seats from my 4WD plenty of room now, probably work for a car as well.
Later on rebuild the base in ply. That will cut out a lot of weight.
Invest in a Glatter laser collimator.
ArgoNavis is a great investment as well
Google, Yahoo Groups, Cloudy nights , IIS are all good sources of ideas for improvements to your particular scope.