Wheel rebuilding. Is it ok to reuse spokes?

So is it fair to say, when I need to replace the worn Open Pro rim on my front wheel - I need to budget for new spokes as well as a new rim?

Given that you'll be replacing the rim because it's worn out then I'd recommend replacing the spokes too.

The Hope and Superstar hubs are roughly the same weight.
The weight loss was on the spokes, which is why I was asking.
Sapim CX-Ray spokes are lighter, stiffer and bladed, so more aerodynamic, although I doubt that'll matter too much!
But, it would affect acceleration, and ease of maintaining speed, although to what extent, I don't know.

Heavier rim tyre and spoke would actually give you more momentum so speed maintenance would be easier (think flywheel) but that is also why it is harder to accelerate the wheel up to speed in the first place.