As others have said, you literally cannot go wrong with a Vortex Strike Eagle. It sounds to my like you'd be happy with either a 1-6 or the 1-8. I'd pay the extra little bit for the 1-8 for the better reticle and extra reach.
I run a Strike Eagle 1-8 on my WS MCR (same gun as the WK for all intents and purposes) and I couldn't be happier. It sounds like you're well within budget for a Strike Eagle and have lots on money left for ammo to make use of the gun and optic. I use it at 1x for CQB drills at the range and whatever I feel like at the 50m, 100m and 200m range.
I run a XPS2-0 Eotech on my SBR AR for CQB and a PK-06 on my SBR VZ for the same and honestly, the Eotech is perfect for CQB and action stuff but I prefer the Strike Eagle for literally everything else and it's still perfectly great for CQB. The more I use it, the more I realize that I'm just as quick to acquire and engage as I am with the Eotech.
If you want to decide between LPVO or fixed 1x, then maybe try something super affordable that's still a decent piece of equipment to keep on hand for fun or for your next gun, check out the 250-dollar Barska 1-4 LPVO.
I don't really do the buy once, cry once thing myself. I do the whole buy everything and then sell it when I want to try something else and lose so much money you want to die route, so, the moral is–don't be like me.