Flights Air Asia: Bangkok-Kuala Lumpur-Padang. URGENT!!

Hi,
I'm sorry for the urgency.
I have just purchased the ticket to Bangkok with Thai Airways and now
I have to buy the ticket from Bangkok to Padang. I have one option
only and it is Air Asia. I'd like to get your suggestion please:
I will arrive in Bangkok airport at 5:35am
Now I'd like to buy a ticket to Kuala Lumpur-Padang.
These are the flights:
Bangkok-Kuala Lumpur: Depart 0835 Arrive 1145
Kuala Lumpur-Padang: Depart 1325 Arrive 1330
In your opinion are they the right schedules?
My worry is that time is too much short between a flight and another
flight (and I will be alone).
I always have to take my heavy baggages and to make always check-in in
every airport.
I don't know those airports at alla and I need your suggestion,
please.
Thanks a lot!