Whats the problem with instructing?
1 or 2 seasons instructing will tremendously increase your stick & rudder skills (please dont be so arrogant as to say that it wont because with the greatest amount of respect due you arn't experienced enough to realise!)
I might suggest that a lot of operators may also have some sort of affiliation with a flying school, it might be an idea to instruct as much as poss for the experience and hours and project yourself as somebody who has a good amount of common sense and that you have the sort of personality that an older captain can put up with for a few days somewhere where their isn't much happening. By doing this you may be able to get some RHS work in something single crew like a CJ or an older CItation 1 or 2.
The other big problem you will ahve is obtaining a type rating. You may well struggle getting employment/insurance if your type rating isnt from Flightsafety or Simuflite in fact I have a quote here from a Flightsafety E mail I have which reads
he exceeds the FSI requirement of 1000 hours
So it may be that you arn't going to get a type rating until you are a little more experienced anyway. No doubt somebody somewhere will take your money of you.
Just a question, are you considering corporate because you can't get an airline job?