The commenters are correct. Time in type and ratings change the cost a LOT. I was doing great in my RV-10 with an instrument rating and well over 1000 hours, but then I added my non-instrument rated wife with 250+ hours. There are companies that won't even write the policy with her on it at that number of hours. For the RV-14, adding her on added about $300-350 to my annual insurance rate as well.
Regarding transition training....this is a long way off, but, I recently got my CFI and if I can get a LODA thru the local FSDO, I may offer transition training in the RV-14. I am not sure I am interested yet, because there is significant extra insurance cost and such involved, but since there are so few RV-14's flying, I feel like it may be of benefit if I can get it done with not too much trouble.
I probably won't even start the application process for a couple months, so that wouldn't help anyone right now.
Back to insurance though, I find that it's completely worthless to talk about insurance at all, if the people both asking and replying don't provide:
Hull Value
Pilot Total Time
Pilot Make/Model Time
Pilot Ratings
For the RV-10 you can easily find people paying $4000-4400 for insurance, and just as easily find people paying near $1500-1700. It all depends on your exact situation.
In my situation, with closer to over 1600 hours and an instrument rating, with a 125K hull value, I'm looking at something like $1300 maybe, based on last summer's quotes. Not sure what it'll be at renewal but probably lower, except by then I'll also have the wife with no instrument rating, AND a daughter who'll be 16 as a student pilot....so maybe $500-1000 more than me alone.