Does my heirloom tomato plant look healthy so far? Indoors for now due to this cold weather (live in Florida but it’s in the 40’s this week.)

Bought some heirloom tomatoes from Whole Foods and decided to toss a few seeds in some soil with this little grow light on them and they sprouted and I planted this one ( pictured below ) in this 7 gallon potting bag. First time trying to grow tomatoes so any tips would be appreciated!