Hi,
The total refurb and a plated trigger will undoubtedly affect the rifle's value. Unfortunately downwards as removing original finish also removes the rifle's history. An old item should look old and plated triggers may well turn serious collectors off. Is the serial number prefixed with a letter or letters? If not, does it have the bayonet underlever release catch? Are the markings visible or have they been polished off? It is hard to provide a valuation, sight unseen, particularly if the rifle has been fettled.
Probably not much help, I know
John