Kota Bharu/Malaysia, Vientiane/Laos and Savannakhet/Laos should be OK, provided your paperwork is in order and you do not have that particular comment on previous Tourist Visa from Pretoria.
after 60 plus 30, as you said,you can do border run for 30 plus 30, usually you have to leave the country, but you could still get another 7 days extension (actually a denial) at Immigration.If that not suit your timeline leave and get another 30 days entry stamp.