Thanks for that, built quite a few helis but new to Nitro and couldnt put my hand on some of the info, I have most of the stuff in mind now, if i go for it will do a fairly budget build, I have a spare Heli command, full size servos (Align 610) don't laugh no problem all all my logo electric 600. Need a Tail servo and mini throttle. Engine will not be quite so budget, OS55 HZ-R with OS pipe and probably buy an Align 2-in1 for power and glow, again some may scoff but friends have used them for years with no problems. Almost tempted to get an Aerospire governor thats not that cheap but it can tune my mixture for me like Carb Smart once I get the mixture in the ball park.
Will also put RPM and head temp telemetry on, works really well with the N7.
BTW I found the Savox 1357 as a throtte candidate, 1257 is standard size according to my dealer.