Do you really need roller saddles when there's no trem? The reason they are 'roller' is so that the string spacing can be adjusted to your taste. Which may be useful if it's a non-standard width neck, but it all looks fine with the kit bridge, which should be one of the standard string spacings.

The downside with trying to find a hardtail string-through bridge is finding one where the screw and string holes are the same as on your current bridge. Whilst the fixing screw holes can be plugged and redrilled, if there's too big a difference between the string holes and the mounting holes (the string holes will determine the bridge position), the bridge could end up in the wrong place for good intonation adjustment.

Babicz hardtail bridge is string-through. https://www.pitbullguitars.com/shop/...rdtail-chrome/

Dimensions here: http://www.fullcontacthardware.com/f...dtail-original