Been down this road a few times. My take is your priority should be a consistent and easy air supply, either tanks or compressor (preferably both). I've had expensive compressors and cheap ones, they are always the weak link since the cheap ones break and the expensive ones make you anxious. The best option for me was having several tanks and a good compressor along with a decent filling station 15m away.
Second, while the inexpensive scopes are a good value, once you use an expensive scope you'll be spoilt. It doesn't make good economic sense to pour lots of money into something that only gives you marginally better results but I still can tell. Athalons and Vortexs are good values but I really love the Nightforces I've had.
Third, I do not like to tinker so I've enjoyed traditional RAW 1000s from Martin and Daystate Wolverines. I like Foster refill valves otherwise the Daystate Huntsman would also fit in there. The Steyr and FX Impact I've had were painful to work on and always needed attention. The other FXs I've had were fine but I think they are way overrated and under built for what they are. I did have a synthetic short barrel FX Crown MkII that was an awesome gun though. I've bought and sold almost 100 different air rifles and pistols, high to low, which has made me a conservative traditionalist.
Finally, once you get it all together it does get a bit boring and repetitive to shoot so darn well everyday, entire magazines into ragged holes time after time. Honestly for a $2000 heirloom I'd get a high end tuned springer with a custom stock and classic (older) Leupold crosshair scope and shoot the heck out of it, create some patina and develop your skills.