For making new group chat is good but why need to make new one? Because this forum is good enough to create conversation and ask and answer quetions here no need to worry because everything you can ask here as long as you do not ask for scam or any fouling questions that can harm both party.
And thank for a welcome
It honestly sounds like a disaster waiting to happen. I agree with Victorycoin. People joining these forums here at Bitcointalk already fall in to scams made by complete newbies even when there is a big red spanning text warning "!!! WARNING: This user is a newbie. If you are expecting a message from a more veteran member, then this is an imposter[sic] !!!". Doing trades through a Telegram or Skype chat sounds like an even easier way to get scammed. There is no way to know whether a person in the chat is who he or she claims to be outside of it. Anyone there can abuse of people new to Bitcoin with little to no repercussions because of the temporary nature of these chats. I am not saying that it is a bad idea to have them, but maybe restrict the kind of business that can happen within the chats. You can also adopt an every-man-for-himself policy towards the chat, but many scams are bound to happen if you do. Good luck.