I disagree with the above comments. I think it's well worth getting some kit, aim for decent used stuff
- the Sonosax is maybe overkill to start with - the other 2 recorders will likely be a useful back up ( or Renter ) for a good while if you do upgrade - I would also look at a 633 it covers 90% of my gigs, as does 3 wires and a boom. IFB you can start with a couple and add as you go - G3s are great - get the best boom you can afford ( ie a step up from the Rode ) you'll never regret it