Welcome to the forum! Actually it's fairly easy to build your own kit and like you said you can pick your own equipment and be in it less.
With the trailer adapter you can use your taillights which are much brighter and no extra lighting in the rear. Now on those lights on the bumper of the 700 I went with these
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They are a dual setup so 3 wire is all and the white is hooked up to headlights or separate switch however you want that but when they receive power for turn signal the white automatically goes out and switches to amber it's pretty cool
For install of those I just got a piece of angle aluminum from home depot and used good double back. Very simple and cheap.
If daytime white wasn't wanted just the amber lights can be bought for around 3$ I think.
My current setup is slightly different but same principle.i didn't use toggle this time around I used two small led buttons one for each side and if you hit both you have 4way flashes as well. These are small and waterproof.
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These are very bright and can be seen in daytime much better then aftermarket set