Hi Warren,
between you and I would would not buy a gaming system from Dell for the main reason that there are other companies out there that are dedicated to building and supporting better systems at a compatible price.
If you cant build your own or don't have the resources to get the hardware and software then here's two companies that have good reputations.
Digital Storm
http://www.digitalstorm.com/?utm_so...ng-Computers&gclid=CLe1jues1NQCFQGUfgodZkoMVQ
Another one is Jetline Systems. I do have some experience with this company and I cant say one negative thing about them. They are very serious about flight simming and hardware and build a monster system along with fantastic support. They can be pricey but they are always willing to work with the customer.
http://jetlinesystems.com/
Whatever you decide to do I wish you luck. I just wanted you to know that there are other places to buy that I believe will build you a system dedicated to your mission be it designing or gaming. I have nothing against Dell or any other company but I personally feel that you will end up happier by actually going somewhere that is dedicated to what you really want.
When it comes to gaming you should personally go for the big card. You dont need the 7700 better off with the 6700K which has a lot of leg room for overclocking.
Go for the 1080 Warren. Its the one piece of Hardware you really need. Also the ram you posted is slow by gaming standards. Get faster hell 3200 or faster. 16 gigs is good.
Also you didnt post what type of board and cooling Dell is using in this system? Liquid cooling or aircooled? Personally Liquid cooling is mainstream and no gaming system should be without it since cost are so cheap and installation couldn't be any easier.
Don't be fooled by shortcuts even more when sales folks say things like you don't need that. The average user might not need aircooling but a good gaming system should be on liquid. Period.
Jetline actually overclocks your processor and sends it ready to go meaning its stable.
Dell wont do that and if they do Id bet its not going to be even close to a Jetline system.
I normally build my own and thats a big bonus as I take my time and get the best deals possible for hardware. Also and I know this might scare you but look in your area and see if there are any computer builders that might build custom systems. You might just find that you have a guy or gal in your area that specializes in building highend systems on the side and will probably give you a great deal on a killer system.
I have a number of close friends that build on the side and they make some great systems and the best part is that they sell them at a great price and give folks the chance of affording a highend system at a middleend price. Everyone goes home happy.
Save your money and do more research. Your better off saving more cash so you dont have to keep upgrading all the time. Do it right the first time.
If your happy with Dell's offer then go for it.
Good luck.