Do you plan to do new paint & mod fairing/body,will you be getting C2 after each years pass and planning on new/used bike?
Those 3 question is common major question among most decision when buying..
If you going straight into C2 after each years then just buy anything cheap used without major issue problem on them (Doubt on used 2B sport bike tbh), unless you just wanna stay on 2B for long term for sake of singapore road..
Its doesn't really matter about the power on 2B bikes as almost all the big brothers will "Zroom" you before you can throttle off, unless you wanna do some mod tweaks which you don't mind keep changing back when on inspection.. (Puzzle me since you go after looks why you mind the power?)
Money is always the matter come to buying motor vehicle in singapore unless you are in the rich side then nothing going bother you..
After-all let me assume that you only wanna 2B bike only, as you mention above, "looks" will always need to be done on modding the fairing and new paints to remove the standard look then i wont tend to choose Aprilia over those 2B yamaha/CBR/rieju Etc.. (Costs)
In the end funding on the bike you wont last long is really a wastes after-all so hope you can use those 3 + 1 common (Common as in M) advises to buy your dream bike.. Good luck