I went the other direction - I saw an hobby lobby sale for a 3500 kv heli motor called Cool Red - its a finned motor and delivered to my door was just $25! I wished I had bought more than one. Its in my Vendetta and is a killer with the mamba 25. Super power and if I want stupid speed I just run 3S instead of 2. I get near 30min run times and thats blasting on the street or tennis courts where its at or near WOT most of the time. Temps have never been over 135F, mamba barely warm as are the batts with ambient near 100F. It is a strong enought motor I went to ball diffs to stop destroying the diffs, lol!

I have a GH3500 in my MQ SE and it rocks! I have the 4700 also but have never installed it - too much fun with the 3500. Again if I want to go faster, just run 3S. The batt compartments in Vendetta and MQ are just about identical so its easy swapping 2S and 3S back and forth. I've got a hyp Y22l 5000 and its going in my orig old MQ when it's brushed VR3 quits.

The only mamba motor I run is in my M18MT where its seems to be happy. Its a 5400 and it ran hot in both vendetta and MQ then I put it in the Xray, I guess its the kind of weight it was engineered for, runs warm - I've never temped it since its only warm. My M18 has a tekin 6800 and I expect it to run warm when I get it finished, another very light weight rc.

Don't have a speed est for you on Vendetta with the 4700, but it will be enough you'll need a radio with exp to dial down strg sensitivity or you'll find it hard to control to the point of not being too much fun.