Those are the right parts...but the thing is, unless your carbs have somehow survived the holocost, all you are gonna need is the o-rings for the float bowl drains and the fuel tee o-rings. So better to just buy those from Honda or a generic o-ring supplier. Of the dozens of roundtop cb750 carb racks I have rebuilt, I have never found a bad float bowl gasket or screw top gasket, and aftermarket jets are known to be garbage. The one time I replaced a float needle, it leaked wayyy worse than the original, so I put the original back and it was as good as it ever was (which to be honest, is often not that good. You really HAVE to learn to turn off the petcock with these bikes) for the another 50,000 miles.
Just get them clean inside.