Blimey, that car didn't come with new seals at that price? Everything else on it looks restored/replaced, so that's a weird one.
I wouldn't apply WaxOyl to it, in case that's what you mean specifically.. its a bit old school and very messy. Best get the underside done with something like Raptor paint these days I gather. If you're talking about the protective waxes for the wheel arches mentioned earlier, you want something light you can spray on (and remove later with a pressure washer if you want!), like Bilt Hamber Dynax UC.
Are the brakes totally standard?
Interested to hear about headlights options. I see a lot of those LED upgrades with the 'angel eye' style halo around the edge, but they're not for me. So would be good to see what else is out there.
Check out Raybrig (Stanley) headlamps. Techno Toy Tuning offer them but RHD Japan were cheaper for my sets.
Dynax UC is really nice for the arches and floors. It dries semi soft and tacky with a yellowish tint. Same as the UB which just has a black tint. Great for overcoating and freshening up old Schutz or bitumen based finishes whereas anything else will eventually flake off (apart from more bitumen of course). But you want the Dynax S50 in cavities that aren’t prone to abrasion or direct contact. It stays softer and creeps everywhere. They can supply ultra long flexible aerosol lances with multi directional tips for spraying through grommet access holes and those hard to get to places. Beware though that the car will ”bleed”. Especially when the weather warms up.