I cant see a reason why you would ever need 200 amps :wtf: thats just spending extra money for no reason. Not sure what part of the country your from, in the philly area its usually around 1800-2500 for a 200 amp service change.
not sure were your at in jersey but I can get a 30ckt 100a mbp any day of the week :dunno: , Ive put in tons of them, have i been violating the code all this time :D
your gonna create more work and more expense that way, and as a contractor anytime some one says they want to help or just have me do the tie in the price goes up.
does the service need to be replaced? post some pics of the panel, maybe you can get a few more years out of it before replacement.