What's the primary use of the scooter? If just to go to 'Pasar Malam', then it's good enough. The fuel tank a bit small.
I've used Ego LC Fi before, used it for 3 years, very cheap to maintain. Good scooter IMHO but lack travelling range due to smallish fuel tank.
You cannot measure what to change every month... if you don't ride it much, then nothing to be change. For example, it can be months before it's due for an engine oil change. It's about km distance covered, not month. As for engine oil, if I'm not mistaken it's due for a fresh engine oil every 5,000km. Do check with the user's manual. It's all there. 0.8L engine oil just RM19
Refresh brake fluid every 24 months. Simple job.
As for CVT (belting, weight, & stuffs) do it every 20,000km.
Air filter need to be change as well, but I can't remember the details. All in the manual. Do read and follow. It's there for a reason

changing to scooter coz the seat is much more surface area in compare to my current motor hihi