The Howa 1500 isn't exactly a light weight action, so a longer, heavier, barrel contour might be worth considering as a means by which to balance the entire package.
If you're looking for a light 6.5 Creedmoor, you might get to a better outcome both quicker and for less cost if you start with a Montana then to start with a Howa 1500 that you'll need to modify extensively.
