Little confused here. Sounds like you were wanting to partition the SSD using MBR rather than GPT? If so, curious as to why? Is Windows 10 the only OS you are going to run? I wouldn't see why you wouldn't want to go ahead and use GPT on any size drive.
I read some mention about some programs that rely on MBR might not work.
So far I've installed a handful of programs and games and no issues.
Maybe somebody can elaborate on that theory more or if it's just certain circumstances.