That helps a lot.
I'm new to blending and wish to do exactly what you said anyway.....base clear the whole car after fixing the spots.
I would like to get this right the first time.....so can I do this.....
Sand out the spots like you said....fill with spi expoxy. Sand with 600 till even then with 800 using dry guide coat. Then spray base and feather out and leave it at that.
Then wait to see if it shrinks or is un even.
After I think the substrate is even I would scuff the base and prep paste the whole car.....respray and then clear.
Will this help in getting it right the first time.
Part of this is knowing how the materials will behave. Trusting that when I spray the base and then re clear that it really will be hidden. I've seen some videos showing that it does work.
Last time it was wrapping my head around how white clear that has been scuffed turns back to see through clear when sprayed. It's trusting the stuff will work.