Don't worry bro... doubt you'll use more than a handful of lights at any one time after you've moved in completely. All the nice deco and L-box lighting will end up only being used when there are guests coming over.

For average days you'll probably just use some downlights to light up specific areas, fridge, air-cond (at night & dependant on HP of unit). You'll probably be looking at a bill of RM200 or so monthly.

For the pendant lights, it's not mounted to the plaster ceiling itself as it will not hold over time. Usually the electrician will bolt it to a timber support (some sites refer to it as lath, can't for the life of me remember what its called locally) within the plaster ceiling.

Same would apply for track lights, better to install it to something with better support to avoid cracks on your plaster ceiling due to the weight of the light fixture.

The metal pieces holding your plaster ceiling are not strong enough to hold your light fixtures. You would also want to avoid installing on those simply because any electricity leak would turn the metal pieces into conduits and potentially cause more problems.

You can try drilling first to see if there is anything to bolt the fixtures too, but to properly do the installation you'd need to cut a hole in the plaster ceiling. Putting back the cut out piece is not too difficult or messy if done right and most electrician's would be familiar with the process. Just be prepared to repaint and touch up the plaster ceiling on completion.

For anyone looking for downlight casings and LED lighting, just saw that HOS In D'sign is having a promo on their FB page. Price i'm guessing its from RM1 for downlight casings and LED lights from RM12.90, they didn't state brands on their post so have no idea.

To get the promo, you need to:
1. Like & follow their page
2. Show the post to them
3. Get the promo

HOS In D'sign FB

Say's while stocks last so GO... GO... GO...

Don't have any specific brand to recommend but stay away from the cheap China ones. Doesn't last very long outdoors and the one i used before always gave issues (both spotlight and tower light). Tower light wasn't exactly cheap either.

Also make sure your contractor uses armour cables for your outdoor cables.

For the entire strip or just one specific bulb? If its for the entire strip then problem could lie in electricity delivery, but if its just a specific bulb then it could be an issue with the fitting or the bulb itself.

T5 lighting does not have an external fuse or choke attached unless you're referring to that at your main fuse box. But it shouldn't be the issue as any issue at the main fuse box will impact some other areas as well depending on how your electrician did the connections.