if you have the stock one then it will be ok, not amazing. And if you dont have the stock version you should be fine. I have a old mac (not pro) and it gets 50fps so you should be fine
If you want to make a server on your computer you that is pretty complicated because you have to make it port foward, its a long process. The best was to go is by renting one. Its a fast server, you make it instantly. You just need support from your parents To pay for one it costs about 20 dollors a month for about 30 slots. If you want like 10-20 it will cost like 15. To make a forge server you just install forge to your server after renting it/ creating it. All rented servsers are automatic and mostly reliable. I cant answer 6 exactly. But the answer is probibly plugins that you add to your server.To make your own server just look it up on youtube. -bismuthguy123 Here ae some links Server Hosting: http://www.exodushosting.net/minecraft_standard.php Plugins: http://plugins.bukkit.org/
I tested the server, only 1 portal isn't working and that is the Hunger games one. Btw That is an awesome server I would love to play on it more when every mini game comes out. If you need more help send me a mesage.
I'll help you im good with progaming and im also play alot so i'll help with staff. And i can help u with spawn and other building My minecraft name is the same as my account too.