The reason to stay away from a lightweight/feather weight rifle is to be found in the OP's caption "lo recoil." Most of us are concerned about felt recoil, as opposed the actual energy generated by the cartridge. Same cartridge, lighter gun, = more felt recoil, all else - stock material and dimensions - being equal.
As for the 30-30, it lacks a bit in the legs department for the OP's 300 yard "out there " upper range limit. Can get it done, but starting velocity predicates a fairly curved trajectory, necessitating accurate range measurement (laser) and excellent sight adjustablilty. There are better choices, such as the .243, 6.5, 7-08, 270, .308, 25-06, to name a few. Availabilty of factory ammo is an important consideration if the OP is not a handloader, as well.