Don't fret about the antennae. You can buy a replacement antennae bar on Ebay for £10-15. Given that many commenters report damaging at least one, if I were to do this again, I'd just buy a new bar (before starting) and get the screen off faster.

Just finished this. I managed to detach the middle of the 3 antennae, but I managed to clean it off and glue it back down - and all appears to be good. One tip: the antenna bar is only £10-15 on Ebay, I would recommend just buying one in advance to save the effort of repairing.

My iOpener spring a leak in the microwave on the initial heat 😞, so I just used a heat gun on low heat, holding about 6inches away for about 30 seconds at a time on half-side sections. I usually needed 2-3 iterations of this to get under and detach the section, but given one of the comments on here saying the risk of not damaging the screen was low, I decided to take the slow and patient method - my screen survived perfectly.

All together this repair took me about 5 hours, of which getting the display off was half of this.