Can't help with project insurance but...
I am with EAA Canada through Nacora Ins. Brokers. Coverage used to be through Global but is now with Old Republic Canada. Magnes through COPA VIP was more expensive for me.
Flying 7 with 90K hull in motion coverage is about $1300 with Old Republic, Magnes quoted $1900 and Global was a little more. A number of years ago I was with Air 1 in BC but they became overly expensive.
Hope that helps.