You can find USB number pads to plug in, but it is not hard to find laptops with one built in. I have to have one too, so every laptop I have ever bought has one. Newest one is an ASUS ROG GL703VD (version with GTX1050, 256GB SSD and 1TB HDD). i7-7700HQ, 16GB DDR4, 17.3". Price has gone down $100 since I got it and you can find it cheaper elsewhere...but not that ship to Singapore
.
www.amazon.com/gp/product/B0753PV7PH/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Still not sure I like Win10.
The optical drive is a bit less common now, which was a surprise to me. But externals are cheap now, and with USB3.0/3.1, transfer speeds are plenty fast.
Myself, I am in the market for an external media drive. It took me all of 3 weeks to fill up the 1TB drive on this (including the crap transferred over from the old one). I am wanting one big enough to back up all three laptops, 3 phones, a Kindle, plus plenty of shows/movies. But I am cheap and peeved that prices have somehow gone up in the last two years, so unwilling to pull the trigger just yet (settled on WD myPassport 4GB, just waiting for a good sale).