If I order 100 IPS/server will they all be on the same subnet? Or can I request an assortment?
All will not be, but speak with support first and say that you need maximally random subnets. 1000 is big amount so they will try to get best deal for you ( don't forget ask discount )
Is it safe to get 100 IPS/server or should I get 50, 10 or something else?
Should be safe. Anyway this depends from what support will say you. As more servers you will have, as more subnets/locations you will have.
Will these IP's be safer than those provided by proxy providers?
I would assume so since this process is not as easy as renting proxies so therefor the IPs from the server provider would be less abused.
I don't see difference. I also have package from blazingseollc. Their and my proxies can't register instagram acc(but we have another ways). But own proxies should be less abused, as it's harder to setup, than just buy.
Do I have to maintain the IP's in any way? or is it a set and forget setup?
Setup & forget. Only once I needed to restart my server ( still don't know why ).
Does frantech support using their IP's as proxies?
Don't think so. They don't have any proxy services. They just sell vps. And on vps you can do anything what is not againt TOS. Proxy server is fine, so we use it
Do you think I will need more bandwidth if I have 100 ips/server?
You can always buy more bandwidth ( on frantech 1TB $2.50 ) 1TB will be overhead 1000%. Don't think that even 30gb will be used with 100 proxies
Is there anything else I need to know such as what not to do, or tips and tricks?
Tip is just speak with support Also maybe find 3-5 companies like frantech, and speak with them. Go for the best offer ( more random subnets ). Even if you will have 20-30 servers, don't be afraid(lazy), as you will setup them in 3h.
Also you can always change the IP what they provide( again need to speak with support, but ask this question before you buy. Don't know all companies do this or no. But they should do. ).