Sounds great mate and I definitely am in a similar position to you.Hey there. I am also a tremendous 7X57 aficionado. However I only have a beer budget. I'm sure most of our fellow responders would turn their noses up at Savage firearms, but since your family is growing, I offer it as an excellent option. I ordered one from Savage custom shop. New accustock, accutrigger, 24" barrel matte finish. Price to my dealer was $625. I paid $725. Using Hornady Superformance 139gr SST, 3 shots @ 100yds went into 3/4". I couldn't afford to turn my nose up, I wanted an affordable 7X57. This would fill the bill, fine accurate rifle. You can save enough money to start saving for that Rigby Highland Stalker.
It's turned into a big thread, but what I ended up doing was buying a cz 550 which I'm having rebarreled to 275 Rigby.