A couple more notes about all of this. Yes there is an rba head for the Beast tanks but it is dual coil so may not be the best for beginners. I would pick something reasonably inexpensive that is single coil for a first rba, but that is a personal preference.
You will also need some measuring equipment. Cheap plastic stuff works just fine. I mix 236ml bottles so a syringe would be too small. I have a 25ml graduated cylinder for smaller quantities and a 100ml graduated beaker for the larger quantities. I do have a couple of syringes those in case I want to make a small batch of something. These items can be gotten super cheap just about anywhere.
You will also need some measuring equipment. Cheap plastic stuff works just fine. I mix 236ml bottles so a syringe would be too small. I have a 25ml graduated cylinder for smaller quantities and a 100ml graduated beaker for the larger quantities. I do have a couple of syringes those in case I want to make a small batch of something. These items can be gotten super cheap just about anywhere.