If you have other schools under consideration which are less selective (not to say “easy” – just not impossibly hard) that would be a better use of your one shot for ED admission. At best IMO you would be deferred to RD anyway.
In the context of someplace like Brown, smart/accomplished/“at or near the top in their HS” applicants are the average applicants – at least where I interview. Then there are the exceptional applicants, and a lot of those (most?) aren’t admitted either. 40,000 applicants for 2600 slots (~1700 class size) and things get pretty crazy.