Yes, for the future you should look at switching to OpenCore from Clover. If you plan to install macOS Monterey when it is released in October/November this year you will probably need to be running OpenCore.
Whether you switch now or in the future is down to you. How much time do you have available to spend learning and building an OpenCore Coffee Lake EFI for you system? You have the basis of the OC folders contents in your current Clover setup. What you will probably find intimidating is the way you need to start with a sample config.plist and make it fit your specific system. This is understandable and not uncommon. The Dortania guides walk you through this process, plus there is a really good Clover to OpenCore conversion guide on GitHub -
https://github.com/dortania/OpenCore-Install-Guide/tree/master/clover-conversion
You should understand that the guides over at Dortania only cover the basics, to get you up and running with OC & macOS. There are a lot more options and features required, that need to be added to the OC folder, if you want your Hack running smoothly.
The reason there is a lack of information about using Clover with Big Sur is mainly due to OpenCore being a more rounded bootloader, which works better (in my opinion), with the newer versions of macOS. This while it is still in Beta mode.
Getting Clover to boot Big Sur required a fudge of the OpenCore setup, as Clover can't boot Big Sur on its own.
The Clover developers incorporated a number of OpenCore aspects within the last few releases of Clover. This did not go well when first attempted, so there was a rush for people to start using OpenCore last year. This coincided with the release of Clover_r5123/r5126, these releases were a complete dogs ear when it came to working with macOS.