Why can't you do full boils on your stovetop? I think you are just making too big of batches. I do quite a few 2 1/2 gallon batches. Easy to manage, easy to boil, easy to cool and I get a case of bottles. Do them BIAB so your brew day isn't so long and you can do 2 or maybe even 3 in a single day, all right in your kitchen.