I've got a bit of rust that's been lurking on the side of the rear windshield on my 300D for several years. Since I'm in the midst of a massive rust repair project I was considering trying to get to that too. I already have the hat shelf and C pillar trim out because I'm re-dying the shelf so I was thinking it might be the best time to remove the glass. However, looking at the FSM, it looks like it's a pretty complex job. So I'm debating whether to pile it on to the other complex jobs I'm doing now.
Anyone done this as a DIY and have advice on whether I should do it, or try to have a professional take it out? The glass is fine, by the way, just want to access the rust.

__________________
1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)