Okay here's my lengthy suggestion. Brace yourself.

If you into city environment, you can go to KL because it is an urban area which you can find conveniences like public transport, hotels, restaurants and mall our signature building (twin towers, kl towers),plenty of places to go in KL like zoo negara, aquaria klcc a little bit further from the town will be our own popular genting highland casino and there were theme park under construction(an upgrade version of the old one) which expected to be fully operate 2019 however, the indoor activities are open and there also a popular casino. Do check that out on google.

Cameroon highlands will be much of mountaineous and range area, it is quite rural it is about 3 hours drive from KL. The beauty of that place are the tea plantations. The sight is magnificient. This place used to be much colder back then,but i think our world is changing however for us it is still cold on its lowest temperature. Homestay, hotel are abundance there, you go hiking some of the popular trails there just to get feeling in the tropical forest. Similar to this Cameroon Highlands is Kundasang Sabah. It is located on the borneo island which requires you to 2hrs 45minutes fly from KL. And it is also the foot of our highest mountain Mount Kinabalu (need to book much earlier as this is a world attraction if you plan to climb ). Kundasang also host a hotspring, rabbit village, fish spa and also tea plantation (cameroon tea plantation looks better ).

Speaking of Sabah (one of the state which located on the north Borneo Island), it is also the host of Sipadan. Sabah have a lot of beautiful island arguably better than Krabi Thailand. You may check Mataking resort, Bohey Dulang and many more. If you love beaches you can plan to climb a mountain at Sabah and relaxing at its beaches.

For Penang, it is an island also a state in Malaysia. A combination of beaches area, suburban area. You may check this following hot spots, Batu Feringghi, bukit bendera, Komtar Tower and newly exciting place Escape Penang.

Actually there are plenty places here. Maybe next time if you need my suggestion i will help.

Sorry for such a long reply. But i hope i help you as much as I can. =) I hope if u come to Malaysia u can make videos of your trip and post it here at steem.