2) I connected to someone's node (because I do not know how to create one) that has an average ping time of 75 ms, is this good?
75 ms is fine. The network latency to the node is a lot less important than the CPU speed of the node. A node with a slow CPU might take 3000 ms to hand out new work to your workers, whereas a node with a fast CPU might only take 500 ms. Whether you're adding 1 ms or 200 ms of network latency to that is nearly (but not quite) irrelevant.
looking at the nodes' scanner page, is there anything can tell us about CPU speed of a node?
I think you mean hashrate, and yes this is JT's currently:
Local rate: 58.1TH/s (2.1% DOA) Expected time to share: 2.1 minutes
http://ml.toom.im:9332/static/Hi guys, I have few questions:)
1. Where I can find information, when blocks have been found by jtomim fork? Historical data and current data from last few months? I am considering to mine on p2pool.
2.
Is anyone still mining on forrestv branch? EDIT: I've just read about jtomim plans to merge both branches. When is that going to happen?

3. Is jtomim fork supporting BECH32 addresses, native segwit? Can I mine there with bc1 Bitcoin address?