Road to a Light Gravel bike

I am trying to turn a old road bike i bought for the trainer to a light gravel bike so I can take my toddler son on gravel paths using the minibiker bike seat pro.

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I dont want to buy a new bike or use a random walmart mountain bike or something.

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I have a Raleigh Cadent Two Zero. Beautiful bike, tiagra flight deck, tektro brakes, tiagra front derailleur 3 chain rings, shimano 105 rear derailleur. Alex dc 19 rims with bontrager 700 x 25.

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I think there is enough clearance for 30 panaracer gravelkingsk, gonna try that, if not then will go with 700×28 same tire. Has clip in look, will change to flat pedals oneup composite. Right now bar is 40 wide, will change to 44 ritchey comp venturemax v2. Will get a tune up after all is done. Probably should get front gear shifting dialed in.

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Any other recommendations?

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Thanks