The upped could have higher stats. Look, unuped cancer costs 5

but generates a new malignant cell each turn. Cancer (elite) costs 8

but has the same effect. So, I do suggest to increase the upped stats by +1|+1, or you could lower the cost by 1

. Also, there is a card already called cancer, but as in the horoscope, so I'm afraid you're going to have to change it to cancer cell.