Thanks to all of you who offered advice in response to my post. I have been riding for the last 33 years, beginning with imported bikes I could afford, then moving on to air-cooled BMWs, water-cooled BMWs, then back to air-cooled BMWs, then to a water cooled import cruiser and, at present, with the RG.
While I have done various types of repair work over the years, including some motor work, there are certain things I know enough not to attempt, such as synching carbs on an airhead BMW. I do, however, believe I would be capable of taking apart and putting back together the top end. I would likely send the heads out and have someone bore the cylinders, but would attempt the reassembly myself.
Funds are defintely a factor, as I am self employed in a profession somewhat dependant upon the real estate market, and things are only now beginning to show some improvement from the 2008 crash. The cost estimates provided by Rageglide are most helpful, as well as the recommendations regarding gaskets. I think that a motor restored to its original condition will provide more than enough power for my purposes.
In addition to the work on the heads, items I anticipate replacing would include the pistons, rings, gaskets, etc. While I have the motor apart, however, it sounds as if lifters should be added to the list. Also, pushrods, perhaps, and if so, what is the advantage of adjustable pushrods? Should I consider higher compression pistons or stick with stock?
Thanks for your patience with the questions of a newbie, and thanks again to all those who took the time to respond to my post.