First of all, most of us with yorkies would recommend anything but carpet. Many of us have ripped out the carpet and put down wood, laminate, or tile. Whatever you do, it sure it nice to have new flooring!
We ripped out our carpet ourselves, it's really no big deal. You will need to wear a dust mask though - you will be horrified at all the crap that is under that carpet. We just ripped it up from the wall tacks, rolled it up and dragged it outside. You will need to haul it off - or have HD haul it off - be sure to ask how much that costs.
The furniture will have to be moved around from room to room to get the carpet installed. The installers will do that and yes, there may be an extra charge for that. Add ons do really increase the cost of the carpet - the $139.00 whole house install sounds nice, but that won't be all the costs. We had Home Depot put some tile in our bathrooms and they wanted some ridiculous amount to remove the toilets and put them back, so we did that ourselves.
I'd go talk to them and they will have to tell you how much all the add ons cost.
Good luck and congrats on getting new flooring!
__________________ Rex & Rowdy's Mom |