No, I mean there is a way to simulate a timer.
Unless a timer has been added.
Which can still do the same thing as a timer. Rednet is great because it lets you do so many things.
Honestly, I'd love to have Redpower in the pack. It's pretty cool and I like the flax and gems and stuff like that. But if it becomes a factor is delays, is buggy, and can be replaced, by all means replace it. It's a great mod, but it's not quite good at updating.