Are you going to keep spewing out fallacies or are you gonna actually tell me why SLI is a bad idea?
Advising a new builder to build SLI is beyond silly.
You really seem to be a pro troll or a maliciously errant Techie.
SLI/Crossfire is not a magic fix and instead is a really bad solution 99% of the time.
The ONLY SLIs I ever used showed virtually zero improvement over the single card solutions and took about 10x as much time to get working then maintain. And I used them as far back as Voodoo2/3.
On a new build one should go single card and then merely upgrade to SLI OR most likely a better single card solution later. The slight increase of SLI isn't worth the cost premium now and a newer single card solution in a year to 18 months will almost certainly top it. The only exception I can think of is if you are looking at cutting edge boards that are soooo costly it is better to bump down a level to two upper mid-range in SLI AND you are a very veteran builder who understands the drivers and how to unlock their BIOS before you even order the boards.
You have been provided a laundry list of reasons to not use a dual card solution but are immensely hard-headed.
The bottom line is it costs more money to run and more time to maintain. So please stop wasting other people's time and money.