70/100-130 is crap IMO.
70 doesn't really have enough content to work with, 100 sucks for grinding but is nice for uniques, 110 has been done 1,000 times, 120-130 just sucks since Joymax did copy & paste.
90 cap is rare and I think most would enjoy it more, 80 is too common.
I'd add 90 cap, SRO-R skills, SoM 1D-8D +5 FB, 9D normal NPC with high rates, add custom Roc to match 90 cap, Jangan cave B1/B2 + B5/B6 with modified uniques.
I'd also add a little bit of SP to get players started [maybe 50k?]
Edit: Also nerf Euro some [ex: remove black res]
The problem is that people need an incentive to join, which is why I said SoM +5 FB items up until 8D, do not make this server around Battle Arena, most people will just go AFK if they start to lose... Infinity road does it and it failed hard.