@300wsm for life that will be a nice setup. They will take a Rem 700 carbon stock as you're probably aware so you can lighten them that way but yeah they aren't the lightest. Like you I prefer the feel of them to the Tikka.
I'm actually trying to decide on whether to keep my z6i 1-6 on it or put my VX5HD 3-15 on...the VX makes it pretty hefty.