If you can back the trailer up to the door,make a ramp through the door and roll it into the house then all you have to do is dolly it into position and hammer drill the anchors into the floor/foundation wall and your good. It's a huge job but a little planning and some good wheels go along way. You may also need to make a plywood trail and ramps for any carpeted areas and thresholds
Right now these are going into my workshop. I'm not sure this old house can take this much weight. They are 1015 lbs and about 2000 or so nice map safe with firearms interior and a huge double door fire safe. Both of them toether are still cheaper than my browning safe.