Dwayne, FWIW, I used a 3/8" drill bit to "swiss cheese" both sidewalls of the magazine well/box, also - which I noticed was lacking in your bottom metal.

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I've also drilled a series of shallow 3/8" holes all along both sides of the lower action body, below the stock line, ala the lightwieght Mauser 33/40, because I don't have a milling machine to machine a slot there ILO the line of blind holes.

If a side-safety type trigger is used, at a negligible weight gain, then a smaller/lighter safety-less FN-type bolt sleeve may be used, at a much better weight savings.

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It ain't no fun, when the rabbit's got the gun