Up to you. EDH on its own is a great game and worth the time investment, personally I wouldn’t ’invest’ fiscally regards skins etc, because that’s digital content which eventually may get turned off at some point in the long distant future - each to their own, if you can afford to.
EDO is now FD primary base code, they will want to maintain that and build upon it into the future, so eventually EDH will get replaced and EDO will likely (3-6 years) go on sale…or you’ll just get it ‘free’ like with ED and EDH.
I would not buy EDH on console now, as it will eventually get shelved. But go buy EDH PC on sale, it runs very well on old tech and probably has another 3+ years life in it before it’s shelved.
EDO only really brings FPS action and slightly better graphics and atmospheric landings (kind of)… overall it’s not much else - I do feel it’s overpriced but as I mentioned it might eventually be free when it replaces EDH…
Don’t grind. Don’t chase credits. Look to the minor factions and just explore…