One thing to consider is, do you want to reach a certain goal and stay there, or are you someone that wants to go faster as time goes by? If faster is the goal, then focus your sites further down the road.
The two most important rules to follow:
1 weight reduction is cheaper than horsepower
2cubic inches rule
How you put your program together now will have immense effect on your situation down the road.
In my case, another year off racing, and a different course on my engine program and i would be running very low eights instead of 8.90s