The bulder is encouraging updgrades to a better quality kitchen cabinet, countertops, etc. I thought everything was fine the way it is, with some minor upgrades I wanted.

I would like better cabinets and countertops but budget is an issue.

Would it be wise to invest in an upgrade in cabinets and leave the countertops as they are (formica) or leave the cabinets and upgrade the countertops to Corian. The builder only offers upgrades to Corian or Granite. Also, the cabinets are good quality
but there are nicer upgrades avaliable.

The cabinet upgrades are $1,850 for the kitchen and $600 for the master bath and the main bathroom. Corian for the kitchen countertops is $2,300.

Any advice would be appreciated.