I generally sell fresh used animals for $850. To take your LO206 and blueprint it to animal class with parts and labor, you're looking $600+. Just something to consider. An advantage of building up what you've got is that you know the entire history of the engine, run time, use, care, etc.
Chip, couldn't agree with you more on your assessment of the LO206 for juniors. While I agree that the LO206 is a great package, (for all ages), I think it can be a logical step to the blueprinted classes though too.
Also, rebuilds (especially on a small plate class) should be no where near 8-10 races. 20-22 would be more likely for your small plate class. You're not turning enough rpm to hurt valve train parts, and cylinder and ring wear (leakdown) is minimal on the animals compared to the flatheads.
Keeping oil and air filters clean are imperative no matter what engine type you are using. Using a good quality oil can cut down on oil change intervals, but remember, you're only oil filter in these engines is the magnetic drain plug. Change it often regardless of engine type in my opinion.
-----That is exactly why we want to blueprint out motor, its our motor and we take good care of it like you said we change the filter after every race and oil every week! We have ran our junior2 motor for 5 seasons buying it brand new rebuilding it every year and its a great motor just like to know what you have. I think that the kids should move up in classes as well thanks for your input it greatly appreciated!!