Hi CD - I think we've all been there hiding receipts at some time or another
. I'll be honest I'm not a big fan of modifications and my hunch is that many issues which owners have may be down to mods but no doubt others will disagree. How much hard earned dosh you sink into the coupe is down to personal circumstances but no doubt regular and correct maintenance is key to avoid major issues. I think there's more trusted garages / Italian independents out there that you may realise but depends where you live. I'm not sure you can compare the coupe to a 90s hot hatch but what I've seen, prices for coupes are hardening due to recent interest in the motoring / classic press
Good luck with your decision