criminal defense, plea bargain under OR criminal proceudre

Is the glea bargain given to my son (18) fair?: my son committed a crime, he is eighteen. He was walking by a house that had its garage door open and there was a bike in it - he stupidly took the bike (right around the street from the our house). Someone seen him and called the police, who knew who he was and they came I didn't think it was him becasue he isn't typically a thief, but I gave them permission to look in the back yard and shed and they found the bike - they took it gave it back this whole thing from time he took it until the kid got it back 3 hours or less. He has never never been in trouble besides an m.i.p. and he paid the $200 and some dollar fine - they charged him with burglary 1 and theft 1 (burg because the house was occupied) - the attorney (public defender) he got has gotten an offer from the DA to remove the theft and charge him with a burg 3 - still a felony - and he has to do 30 days in jail (his atty told me that he normally would only do 10 but they want to teach him a lesson - even though he has never been in trouble like this. and charge him $150 restitution and 1 1/2 years probation. I don't feel this is a fair sentence for him, I called his atty and expressed my concern and asked him if there was anyway he could get him a different offer - he said no he got him the best offer he could and the only other thing they could offer him would be criminal tres and they would do that. So is this fair? - Is this your question? Add additional information