Hi Darkmavis ? congrats., nice score 8) . The value? Tricky without seeing it, but a year ago I paid 550GBP for an 82 LS60, & I reckon that was a decent price ? that was all original & v.good condition, but should be similar for yours. Korean models sell for less on eBay, and newer Japanese may occasionally go for a little less, but the cheaper ones often have issues, & of course eBay means ?sold as seen & no come back? ? you can expect to pay maybe 25% - 50% more in a UK shop.
I didn?t comment on the bridge because I haven?t the foggiest idea what it is lol (anyone?). Should be cheap & easy to replace ? original is a normal TOM with retainer wire, but probably has Metric spacing between post holes, so watch out for US or Euro replacements with Imperial dimensions which may not fit.
I suspect the Fralin?s will be good, but might be worth keeping an eye out on eBay for a pair of original spec. Gotoh?s (PAF Vintage MK-2, uncovered ?zebra?). They're pretty rare & don't often turn up for sale, but should be cheap enough if you find some.
One reason people like these guitars, apart from good tone & playability, is that construction is very close to original US Les Paul circa.1952-1960. Gibson themselves used lower quality construction after Norlin in 1969, eg pancake bodies & weight relief holes. Their recent Historic range is a return to original construction standards (very expensive), in fact their R8 is very similar to your 81 Love Rock, ie a proper copy of 1958 Les Paul (with thin binding in cut-away etc.) :-? .
Ian.