This is some high-level tr-olling. No one with a four-year-old is creating an account on college confidential to speculate or strategize about “getting into a top college” for any reason other than to tr-oll y’all.
I particularly liked “He’s also the breadwinner of the family, so what he says pretty much goes” – as I said, high-level tr-olling.
Speaking as an October kid who went early, and the mother of an October kid who went late, and as a mother full stop: take all the moralizing out of this. Kids do not mature evenly, and being out of sync is hard on a kid. You have focused on the benefits of ‘being ahead’ but completely ignored the negatives of being behind.
As other posters have noted, school cut-offs vary by state- and some states just let the parents decide (some states have age 7 as the first age when schooling is compulsory). There is a lot of material online about the relative merits of early/late starts- you can find support for any view point. Among other things that speaks to how many sides to this argument there are: it is is not “clearly cheating”.
But it really comes down to the one child who is on your watch: your son. What is the best call for him? The answer will depend on him, and to some extent on the school and it’s approach. And imo, it is way too early to make that call.
yeaahhhhh…ask any experienced parent on the site about that. Age is not the only, or even the biggest variable in how your son will do in school. The reasons for starting early or holding back are for the overall success of your child- social, emotional, physical and academic.
Interesting. I am also sure your 5 year old will receive straight A’s forevermore. 
In the event that this thread is serious, I believe you have received plenty of responses. Closing.