Hi folks, any of you work with optical fibre?

I want to extend the optical network into a location where I can use UPS for the ONT.
The UFB fibre is terminated in my bedroom, it's simplex SM and I think the equipment connector is SC/APC.
I have SC/UPC coupling and SC/UPC pigtails ready to splice my own extension - my question is: can I use SC coupling to physically connect SC/APC with SC/UPC or should I not do it?
I've never coupled these together and I'm not sure if it's possible without damaging anything.

Maybe I should wait and buy SC/APC pigtails etc.