Couldn't setup insight working for Bitcore 8

[purplefox81]

I am referring to the bitcore v8.0.0 at https://github.com/bitpay/bitcore/tree/v8.0.0

I am aware that bitcore v4.1.0 goes with insight-ui and insight-api
but it seems that I am unable to find which insight repository and which version of insight is the one I should use in bitcore v8

Q0) I install the out-of-box bitcore v8, port 3000 is listening, but curl localhost:3000 failed. curl http://localhost:3000/ gave me "Cannot GET /insight" so how to test/verify my local 3000 is working and what endpoint shall i use for the testing?

Q1) does bitcore v8 (given the url above) has any built in insight ui/api?
-- My guess is no, because i didnt find any

Q2) To support Bitcore v8, shall I install inisght or insight-ui + insight-api?
-- My guess is i should install https://github.com/bitpay/insight, am i right? anybody can confirm this?

Q2.1) for Insight at https://github.com/bitpay/insight, what is the configuration that I should add to bitcore.config.json?? I couldn't find any reference on bitpay or github discussing about that. My current bitcore.config.json is as follows.
{
"bitcoreNode": {
"pruneSpentScripts": true,
"chains": {
"BTC": {
"mainnet": {
"chainSource": "p2p",
"trustedPeers": [
{ "host": "127.0.0.1","port": 8333 }, { and some other peers here... }
],
"rpc": {
"host": "127.0.0.1",
"port": 8332,
"username": "X",
"password": "X"
}
}
}
}
}
}

Q2.5) for a team who is already familiar with the old insight-ui/insight-api, can they still use the old code in the old repo insight-ui/insight-api?

Q3) which version of insight works best with bitcore v8. OR which version of insight-api/ui if that is a better fit.

I find it quite lost in trying to close these gaps, perhaps some experts in this can give me a hand? Many thanks.