Upgrade from 15.4 to 15.4.1 using Software Update followed by Post-Install Root Patch or use OCLP for full upgrade (iMac Retina 5K 27in Late 2015)

I got an iMac Retina 5K 27in Late 2015 a few weeks ago (first Mac) and after discovering that I couldn't upgrade to the most recent OS I came across OCLP. Followed the instructions and was able to get up to 15.4

Now I see that 15.4.1 is available

Should I upgrade using

a) the standard Mac "Update Now" functionality followed by the Post-Install Root Patch in OCLP

or

b) use OCLP for the full upgrade "Build and Install OpenCore"

and as a general newbie question, is there any list of typical gotchas with OCLP, things that don't work or are difficult to get working, eg I have installed League of Legends, GZDOOM and Final Fantasy XIV and of those only I have only gotten LoL to work