they are a bit tappy generally mate,but not excessive.
if yours is really noticeable,maybe take your lifters out and check the bottom of them for wear.
there only about £30 a set,so well worth replacing.
some people say only replace em with a new cam aswell,i say bull plop,replace em whenever.
as for wheel bearing,jack car up and check for side to side and up and down play at the rear ,with the handbrake off.
you should be able to hear which side its droning from,and for the sake of about £15,you may aswell just put a new bearing in.
easy job to do,and well worthwhile.
thanks for the comment on my car,in really enjoying driving it after the resto
good luck
steve