The racquet is made in Sweden (by Tretorn, they still produce tennis balls today). I decided to first hit with the original string, just to get the idea of how it plays, and then restring.
Coming from a 100 square inch world, I guess there will be some frame hits, here and there, hope it will survive...
And yes, I be playing indoors (carpet), since we are under heavy snow for days.
Thanks all for your advices!