Good choice. The Picco is an excellent engine, but it costs more, and any advantage it might have in power delivery is wasted unless you have the truck setup to take advantage of it. The better build of the Picco might equate to another gallon or so of fuel before it gives up the ghost, but if you aren't an experienced nitro tuner then you probably won't be seeing the max service life out of either one anyway.

As far as power delivery, the Picco seems to pull more like the LRP spec 2... just with more topend.