New or second hand?

Heavy barrel or hunting rifle?

.223 is a good starting calibre, accurate enough and ammo is reasonably cheap and easy to get.

Optics could be as much as the cost of the rifle, and don't forget a decent case and sling.

Do you really need a scope mounted spotlight to start with?

I am guessing you will be walking at night with it? So maybe you want a composite stock type rifle that's not too heavy? If you liked that Tikka, they are bullet proof and a pretty good choice.

If you are going new, think $2K as a ballpark.