Hey guys, complete noob here. I've made some profit investing in bitcoin and ethereum and have thought about using that profit to start mining. Some questions I have:

What can I get with $30k worth of equipment? How much profit will this turn out per month approximately?
What is the most profitable coin to mine right now? Bitcoin doesn't seem feasible but what about Ether or Zcash or Monero?
How many of you make enough money to live off this? How much money did you put into your rigs?
What are the longterm prospects of mining in your opinion?
I read somewhere here about some new Vega gpu that will be coming out soon...is it worth it to wait for this? If not will I be able to resell my old equipment easily enough?

I realize I've asked a lot of questions and some of these could take a while to give a good answer. If any of you can answer one or some of these questions I'd much appreciate it. Thanks!!!

Yes, segwit is activated and my blockheight is currently 268. I did start my bitcoin instance with the flags -prematurewitness and -walletprematurewitness but I don't see how that would change anything.

I'm trying to mine a segwit transaction in regtest mode but for some reason it just stays stuck in the mempool. To generate my regtest blocks I'm executing the following commands:
 > addr=`bitcoin-cli -regtest getaccountaddress ''`
 > waddr=`bitcoin-cli -regtest addwitnessaddress $addr`
 > bitcoin-cli -regtest generatetoaddress 1 $waddr

If anyone has any idea why this transaction is getting stuck, your help is much appreciated.

This is the transaction in question:
{
  "hex": "01000000000101aa1367170c74b62677f525f96786addbbe194274a31b75c5e149d868f480f9730 000000000ffffffff01831500000000000016001412a93cc8895261fb9631dc30948944f49615ff 2b02483045022100f9c051b83fac296775e4f13f074810a3c821c504537b985d475edd078b404d9 a0220059b804bf536a96205c81f8577944cdf5fdd951e67d1d3c08144af2fd615e68c83210358e4 d2bc7dd73220397f964b1b606eaf1dd6718d35a39f8168776a8099134a0600000000",
  "txid": "f158c33d45d806b18d656abf6328d4ec32629c279c77413e5132fdcd9279575b",
  "hash": "39af9e4674aae17f89d689fe69968bfccbfb6efd44ee5b03f61999c377e6cc76",
  "size": 192,
  "vsize": 110,
  "version": 1,
  "locktime": 0,
  "vin": [
    {
      "txid": "73f980f468d849e1c5751ba3744219bedbad8667f925f57726b6740c176713aa",
      "vout": 0,
      "scriptSig": {
        "asm": "",
        "hex": ""
      },
      "txinwitness": [
        "3045022100f9c051b83fac296775e4f13f074810a3c821c504537b985d475edd078b404d9a02200 59b804bf536a96205c81f8577944cdf5fdd951e67d1d3c08144af2fd615e68c83",
        "0358e4d2bc7dd73220397f964b1b606eaf1dd6718d35a39f8168776a8099134a06"
      ],
      "sequence": 4294967295
    }
  ],
  "vout": [
    {
      "value": 0.00005507,
      "n": 0,
      "scriptPubKey": {
        "asm": "0 12a93cc8895261fb9631dc30948944f49615ff2b",
        "hex": "001412a93cc8895261fb9631dc30948944f49615ff2b",
        "type": "witness_v0_keyhash"
      }
    }
  ]
}

This is the input of the above transaction (which is being mined successfully):
{
  "hex": "01000000010ec06e318c2ef872e26fa6b146d93f3218687ed396f71f85768faf5be6679b6201000 0006b4830450221008b21c79f993faf9b8d36738a40f2fe8e63506af2a9049f6b59712ee04ba925 d602202962dd136352b539cd3dae8bf4ecc06bcbf5999914d87a31c372c024ed9bed42012103341 d0d4854a6e3c3c5401377ccf2c4ae493310a6ef1e73b763ab9e5a707a6cf2feffffff0206220000 0000000016001481e1ee5d4b12dd5b5546e674d0527ee378879bea10898f3b000000001976a9147 324bb5f259bcedf0147138ce9eda1265624516788ac00000000",
  "txid": "73f980f468d849e1c5751ba3744219bedbad8667f925f57726b6740c176713aa",
  "hash": "73f980f468d849e1c5751ba3744219bedbad8667f925f57726b6740c176713aa",
  "size": 223,
  "vsize": 223,
  "version": 1,
  "locktime": 0,
  "vin": [
    {
      "txid": "629b67e65baf8f76851ff796d37e6818323fd946b1a66fe272f82e8c316ec00e",
      "vout": 1,
      "scriptSig": {
        "asm": "30450221008b21c79f993faf9b8d36738a40f2fe8e63506af2a9049f6b59712ee04ba925d602202 962dd136352b539cd3dae8bf4ecc06bcbf5999914d87a31c372c024ed9bed42[ALL] 03341d0d4854a6e3c3c5401377ccf2c4ae493310a6ef1e73b763ab9e5a707a6cf2",
        "hex": "4830450221008b21c79f993faf9b8d36738a40f2fe8e63506af2a9049f6b59712ee04ba925d6022 02962dd136352b539cd3dae8bf4ecc06bcbf5999914d87a31c372c024ed9bed42012103341d0d48 54a6e3c3c5401377ccf2c4ae493310a6ef1e73b763ab9e5a707a6cf2"
      },
      "sequence": 4294967294
    }
  ],
  "vout": [
    {
      "value": 0.00008710,
      "n": 0,
      "scriptPubKey": {
        "asm": "0 81e1ee5d4b12dd5b5546e674d0527ee378879bea",
        "hex": "001481e1ee5d4b12dd5b5546e674d0527ee378879bea",
        "type": "witness_v0_keyhash"
      }
    },
    {
      "value": 9.99262480,
      "n": 1,
      "scriptPubKey": {
        "asm": "OP_DUP OP_HASH160 7324bb5f259bcedf0147138ce9eda12656245167 OP_EQUALVERIFY OP_CHECKSIG",
        "hex": "76a9147324bb5f259bcedf0147138ce9eda1265624516788ac",
        "reqSigs": 1,
        "type": "pubkeyhash",
        "addresses": [
          "mr1n1HxFhWGBgWZMh12s8naPBw78is43Fh"
        ]
      }
    }
  ],
  "blockhash": "7caf98ec168f670577c2161493984d7e0419ea58dbcfcc2a1ce579ee5a4ea4e7",
  "confirmations": 1,
  "time": 1487790750,
  "blocktime": 1487790750
}