The whole thing <is less than optimal> to keep it forum friendly.
if you made the decision to sell the firearm before the purchase and you've recorded that intent somewhere...well that's not good. But you can sell your firearms anytime after you purchase it, be it 30 seconds, a day, or whenever. There's no time limit, just a notation about you can't be in the business of selling firearms without a license. What constitutes "in the business" is up to the ATF.
Straw purchase used to be cut and dry. The classic guy and gal walk in. He fingers the gun of his choice, perhaps engages salesperson about the firearm, comes time to do the deed and it's, "oh, my girlfriend/wife/baby momma will do the paperwork." Yeah, goodbye.
Hours or days later, another person walks in to buy same gun and original moron is out in the parking lot waiting for it or directing them on the phone. Goodbye.
In my shop we don't see that thankfully.
Instead, we might get a person, female, who comes in to get a firearm usually thru transfer who has zero interest in the firearm itself. Doesn't want to inspect it or really even touch it. Pass background check and off they go. They haven't said or done anything wrong and you're left wondering, was that a straw purchase?
If you pass the background check, it should be fine. In that respect I agree with the dissent opinion.
There are so many rules and regulations, and more each hour, that just about everybody is a potential criminal if some authority somewhere wants to make an example of you.