There's good arguments to both sides of the fence your sitting on. I will give my personal experience. I started similar to you and ended up getting the
Primary Arms LER 3x Mag from someone on the EE. I also was able to get a Larue flip mount off the EE on the cheap. If your not in a big hurry to get it and can wait some, there are always good deals that pop up on like new or lightly used items every few days/weeks. After using it some, I find that it does exactly what I was expecting. And the eye relief is great. If you are going the magnifier route I would get the ADM mount from PA ($100) with your 3x mag, wait until a good mount comes up on the EE, or just drop the coin on a Larue. I can't speak of the PA mounts, but all their stuff is quality and if there is issues they take care of you.
If you are planning on doing a lot of bench shooting, I would probably recommend selling the Eotech and getting a 1-4 or a 1-6. Vortex is a name that comes up a lot on here because they have a great product for the price and the warranty is untouchable. If I was in the market for a variable power right now I would probably be getting a
Vortex PST 1-4x24. Another one that has been catching my eye and I'm curious to see how they turn out is the
PA 1-6x. For that price and what I've been hearing and seeing about the samples, it is going to be very popular. Now with either of these you will also have to buy a mount, and these are somewhere you do not want to skimp especially with qd mounts. I'd either go ADM or Larue and it's going to be pricey, but a consistent return to zero is important where with the magnifier it doesn't really matter since the reticle is in the Eotech.
Overall you can't really go wrong either way, and these are just my opinions so take them as you may. Without knowing if you use this for home defense, I would recommend you get the 1-4 or 1-6. If you do use it for HD then the Eotech may better serve you. Or you can do what I did and just build a second rifle for HD and put the Eotech on that