So we had another plumber come and give us an estimate for the gas and the price was right about the same as the first guy. Perhaps a little less - he said it would depend on actual work hours. I know that we could afford to pay that price but I did not want to. Plus, we would have a gas line wrapping all around the house from the side of the garage, around the back and then down beside the kitchen before it went into the crawlspace and through the kitchen and continuing into the living room (for future gas fireplace). Even if we painted the pipe (which we would have to because it would be a black iron pipe!), it would still look ugly wrapped around the house like that.
However, our current cooktop is crappy as only two burners can heat anything in a timely fashion. So we are going with an induction cooktop and new downdraft filter. This will mean all new cookware except for my enamel cast iron Dutch oven and our cast iron skillet since the rest of our cookware is not magnetic so won't work with the induction cooktop. The new cookware will be far less than the plumbing for gas too. ;)
I have hired the second plumber to come out and replace my hoses on my washer and install a lever shut-off. It is something that I have always wanted to do and while he was here, he mentioned that the washer hoses should be replaced. I actually know about 5 people who have had their washer hoses explode on them and flood their houses so I think will be a good thing.