A Heroz is a big chunk of buoyant rubber to sink, so you would obviously need a heavier weight to get the same sink rate as the much smaller profile of say a 7" jerk shadz.
Some guys in the shallow reefy areas use only 1/4 oz with a 7" to get the slow waft down. So 1.5oz would logically be too heavy in the 5-10m zone, but good from 15-20m or so over sand.
A lot depends on whether you cast a long way ahead or are more of a 'lobber'.
In terms of the UV 'eyes' on the Lightbulbs, after you catch a couple of fish the coating gets worn off. And my thinking is if the whole body is UV impregnated - e.g. Motor Oil, Atomic Sunrise - then a couple of little eyes probably won't make a difference in terms of attraction. I think heads which have lumo - e.g. the Nitro elevator heads in pale green - would be an advantage over about 25-30m, though.
I've been trying some of the Z Man Redfish eye jigheads from the US which have chartreuse or glow eyes, with a black dot in the middle. They look really good and have a nice Mustad 4/0 hook. I like the effect. Not as easy to attach the bodies to, though.