Hey welcome to R2R!
I'm fairly new here myself but everyone's been really helpful and the place is full of info!
If budget constraints are an issue, maybe it would be worth down sizing the tank a little? I know it took me some convincing to do it as I wanted a 1.2m tank initially but settled on something similar to yours after realising the cost of lighting etc. Will probably depend though if you're looking to get something set up fairly quickly like I did using the budget I had or if you are happy to draw out the set up process buying bits and pieces over several weeks/months and building gradually or just waiting until you have funds to do all at once.
I've got a single AI Hydra 32HD on my tank and that seems to cover the tank nicely, the MyAI App seems pretty good so far too (still getting used to it though personally), but you can download blueprints which are basically presets for it. I was able to find a preset for my tank from the manufacturer's website. Not sure if RedSea would have something similar but I'm sure someone could share it.
Kessil's I'm told do have a better 'shimmer' to them compared to other lighting, however considering the price of the Kessil vs the Hydra (not to mention you need to also spend on stands for these as they don't come with the light itself), you're probably in the vicinity of 1K for the Kessil and maybe $750-800 for the Hydra (based on AUD, but SGD is relatively close I think, I just don't know the demand over there so could be priced differently). Might be worth a look?
At least then you're getting a light AND a stand for the price of a Kessil light. Just food for thought.