+1 to not wasting a lot of money upgrading an entry level recumbent. A few years ago I helped a friend with this same question for his Sun trike. He was asking about lighter wheels and other costly upgrades. I told him it was a bad idea and to save the money for a better trike. He ended up enjoying the Sun delta trike as-is for more than a year until he had accumulated funds to buy a lighter tadpole trike. There is nothing wrong with your bike except perhaps for the weight. It will help build your "recumbent legs" faster even though it is not a easy to ride as a lighter one.

Utah Trikes, where I bought my Catrike 700, made a brisk business of taking entry level trikes from a major American manufacturer and adding upgrades and accessories that would often more than double the price of the trike. Frankly I thought it was foolish on the part of the buyer to do this. Think of the old saying about lipstick on a pig.