The size of the bottle does not matter so much as the ratio of the e-liquid. Starter kits are best paired with a high PG or 50/50 e-liquid, which means the base mix for the e-liquid is made up of either an equal ratio of vegetable glycerine (VG) and propylene glycol (PG), or a higher ratio of PG than VG. This gives the e-liquid a thin consistency that is easy for the small coils within these devices to absorb and remain saturated.
10ml vape juice bottles more commonly have a 50/50 or high PG formula, making them a great option for starter vape kits.