You don't want to go that route. You just need an Ecutek cable/license and tune. There are several companies that offer remote tuning. Personally, I used Delicious Tuning's Flash n' go tune for my supercharged car.
Here's the link to their tune package. Make sure you select that you need a cable and license in the options at the bottom of the page.
https://www.delicioustuning.com/flash_and_go
Your best bet may be to contact them directly prior to placing an order to make sure you've ticked all the boxes and fully understand your costs.
In fairness, Moto-East are also well regarded tuners here who will offer a turn-key Ecutek setup, I just do not have personal tuning experience with them to share but you should be able to find posts from others who have.
Whatever you do don't just buy a universal standalone like that AEM. You will be left with a TON of work both in installing it and tuning it. Ecutek with a good e-tune like Delicious will have you up and running in a day and fine-tuned most likely within another couple of days, installing and tuning a standalone from scratch could be weeks of work, even for a professional.
-Matt