...looking at something like this built with surface-mount parts in the modern day reads like someone trying to do high-speed rail with steam locomotives. I mean, you can do it (see https://en.wikipedia.org/wiki/LNER_Class_A4_4468_Mallard#193... !), but... please just learn to solder SMT parts. It really is easier, I promise you.
To go SMT you'll need to add fine-gauge solder wire (0.015"/0.4mm), more flux than you think you need, and either a second iron or soldering tweezers (amazing but expensive). You should add get some T4 paste, a dental pick to spread it, and a "reflow plate" (that means old electric skillet from the secondhand store). And you'll want an inspection microscope but those are really useful in general. That's all you need!
Stop building with dinosaur parts and you can use shiny new things like the LM70660 which can do that entire design in about 1/10th the space and double the reliability: https://www.ti.com/lit/ds/symlink/lm70660.pdf
To go SMT you'll need to add fine-gauge solder wire (0.015"/0.4mm), more flux than you think you need, and either a second iron or soldering tweezers (amazing but expensive). You should add get some T4 paste, a dental pick to spread it, and a "reflow plate" (that means old electric skillet from the secondhand store). And you'll want an inspection microscope but those are really useful in general. That's all you need!
Stop building with dinosaur parts and you can use shiny new things like the LM70660 which can do that entire design in about 1/10th the space and double the reliability: https://www.ti.com/lit/ds/symlink/lm70660.pdf