"Buy once, cry once" is a great mantra but the reality is that since you're brand new to long range, the features that you want are likely to change as you get a better idea of what kind of long range shooting you want to do.
I have a few of the scopes mentioned in here (Vortex LHT 4.5-22 and Razor gen 2 and gen 3) and have had my fair share of other scopes that satisfy your basic requirements (FFP, mil/mil, etc). Reticle choice is a highly personal thing but in broad strokes, a more simple reticle is better suited to someone who will always dial elevation and a "tree" reticle is better for someone that will hold elevation (and wind) a lot. The Vortex EBR-7D reticle is a great compromise with all of the information you'd need to holdover but not as cluttered as something like a Horus H59 or Tremor. At the end of the day, time behind a scope will give you a better idea of what you like and don't.
If you're requirement is to be able to get prone behind your rifle and hit steel out to 1000m, most quality scopes will allow you to do that. You don't need huge magnification, people routinely shoot out that far at 10x but something like a 3-15/18 or 4-20, 5-25 etc is more common. Lets you have the high mag for zeroing and then you shoot more around 15x for a larger field of view.
There are many sub-niches that different scopes are aimed at so you kind of have to determine which features are important to you. For instance, the Razor LHT 4.5-22 is intended as a "crossover" scope, good for both hunting and "tactical" shooting, hence it's design is biased towards light weight (22oz) whereas the Razor gen 2 4.5-27 is strictly a "tactical" optic and weighs over double (48oz) what the LHT does. Both optics can still very easily be shot to 1000m, I do it with both regularly.
I kind a went off course, after a while in this during this discussion I was set on a vortex razor gen 2. But a few people recommended the arken ep5, I went read alot about it. I was extremly skeptical because of the price point. But ultimatly it looks like a great value for a beginner like me. Great glass, great tracking, zero stop, illuminated reticle, in mil with 32 mil of elevation and a sunshade with it. Basicly all I need. So im gonna learn with this and in a few years when I get better the next stop will probably be a night force atacr. But before that I need to learn to reload.