I like servers high rate more than low rate , because if people make low rates with no last exp stage x1 or x 1,5 some maniacs who driking energy drinks and like hunt monsters long time , they fast make lvls 130 + and have better dmg speed , and an advantage than some others.
On high rates all people fast make lvls , and maniacs later on high lvls can't make very fast exp because then they need many expierence points to lvls.
I like your rates, although I would prefer even faster at the beginning, so anyone who would like to try the server could do lvl even faster.
I suggest this:
stages
1-8: 4x
9-40: 70x
41-60: 50x
61-80: 40x
81-100: 20x
101-120: 12x
121-141: 9x
141-160: 5x
161+: 3x
And so everyone will do large lvls on the server so why not try even faster rates, then people will be able to join even after a few days of server, because they will be able to quickly catch up with the top lvl, which will stop the speed of leveling on higher lvls.
Really high stakes like how old orshabaals servers were really much more interesting than today's boring low / mid rate servers.
I think it is worth giving this server a chance and trying it out.