yes i started out with the single burner fryer. you can absolutely use this set up. it is a 30 quart kettle which leaves little head space for doing a full boil but if attended properly - you will be fine.
i also have the dual burner set up. the dual burner set up is great if you plan on going mini-mash or all grain. you will probably by then have a sculpture in mind and use the burners or use as is with a converted cooler.
the dual burner will take 2 - 40 quart kettles nicely. here i have a 40 and a 30 quart. however i have used a 60 and a 40 with no issues