If you've got the cash on hand, you really can go crazy with the aftermarket parts. I have nothing but respect for people who go out of there way to turn their 10/22 into something truly unique. The question, though, is what *you* want to get out the gun. When I wanted to modify my 10/22, my goal was maximum value rather than maximum performance. After doing a lot of research, it seemed like the initial few hundred dollars buys the most gain in accuracy. Beyond that, the accuracy improvement per dollar spent nets you diminishing returns.
My roughly two hunded and fifty dollar investment bought me an Adams&Bennett (aka Green Mountain) 18" long, 0.920" diameter bull barrel and overmolded Hogue stock (a $120 package deal that was on sale from MidwayUSA); a Volquartsen hammer and auto bolt release pack ($35) and extended magazine release ($18); a cheap red dot scope ($30) and Weaver adapter ($10); and a recoil buffer of some kind ($10). I downloaded some instructions from an internet site that I have since forgotten and put the whole thing together in an hour and a half with no prior experience with 10/22 modification.
The trigger is light and crisp, and I can chew a little hole in the target at fifty yards, which is good enough for my purposes. I am not a big fan of synthetic stocks, but the Hogue is contoured nicely, seems very sturdy, and was very inexpensive compared to the nicer looking laminated stocks. Also important to a lefty like me, the Hogue was at least ambidextrous. I do wish I had spent more on the scope, as the one I bought need to be modified to fit on the scope base properly, but I can always upgrade. Everyone is different and has different needs, but I am very satisified with the accuracy and shootability of this rifle, and I love the balance of the 18" bull barrel.
To return the original poster's question, I would rather spend the money on a regular issue 10/22 and modify it with a few carefully selected parts. The end result is a gun just as (or possibly more) accurate than the factory target model, but you have truly made it "yours". To me, the standard 10/22 is just too good an opportunity for modification to pass up.