where can i find a company that can provide me a Custom Trading Exchange with Full Source Code?
You can't.If you do,you're likely being scammed.Developing a secure exchange is not a joke and people willing to sell you "exchange scripts" are mostly scammers.Should you wish to get your own exchange developed,you will need to find a company that takes such projects. (I do know a few services which I can link you to [PM me in that case]).$30k should be enough to get it developed.
Do you think i should i go to an Ico to collect more money? Or this amount is enough to get a local exchange crypto/crypto something like Binance.
Who said ICO's give free money ? Nope,you don't want to start an ICO to get money to fund your project.An exchange like binance might cost considerably more. Pm me we can discuss
Pm this idiot and you will likely be scammed if you pay them anything upfront. 