I think a few of those can provide a bit more than you need and overwhelm you. For a minimum, recommended installation, personally I'd do:
bcmath
gd
imagick
json
mbstring
mcrypt
mysqli
(or mysqlnd if using mariadb)
zip
+ any others you may need for caching etc. (e.g. memcached, redis, etc.). If more are added to requirements, then you simply just enable them in your cPanel, or if using a standard Linux approach, install them with a package manager or download them and recompile PHP.