360 was a similar weight and speed to what your planning.. it was, and still is one of the best spinners around.

When designing a spinner the weapon isnt my first priority... the strength of the chassis is way more important... whatever you come up with... think of the worst case cinario impact and design it to take the hit.

When i first built 360 i designed it to take verticle hits... which was easy at the time due to the fact it was the first brushless spinner in the uk...a good hit from a modern verticle would total it.

I designed 720 to take horizontal impacts from NST... and it does.

Take rango as a good example of an effective modern spinner... the drums pretty tiny... but the chassis is well matched to it...smaller diameter disc means less leverage on the point it meets the chassis during an impact from a big horizontal.

Also i believe NST has had its day... its still an awesome piece of kit... but the weapon means on a big impact its to likely to hit itself out ot the arena... a few years ago when one big hit was all you needed it was well suited... but these days due to the new robots being much stronger its to easy to flip itself out.

So IMHO verticle is always going to be a better combat machine, not just due to the fact you can control the fight better, but if you take into consideration the strength you need to engineer into it in comparison to your disc OD... for example db10 v 360... db10's 10mm alumec bulkheads and the 12mm hardox disc got totally bent.

Have fun!