wheels are a great place to drop weight and improve the ride.

they are also mysterious and misunderstood by many. Unfortunately, there are a lot of poor designs that masquerade as good options and people are sucked in for the look or price.

A quality 28h wheelset that is handbuilt with j-bend butted spokes is going to be excellent for your riding needs both now and later(if you ride more frequently).
A low spoke 20h front/24h rear(or 16/20) with proprietary bladed spokes or straight pull that arent readily available for replacement will be lighter and less serviceable.

If your current wheels spin true and are silent(not gritty), then chances are there is no benefit to buying new wheels. Instead, buy some quality tires to reduce rolling resistance. $75 will get you a set of really quality tires that are faster than the Ultra 2 which come on the Goodship.