Yes I was assuming step 0) is you have a right of substitution.
IANAL however I don't believe a fettered one would matter as you have actually exercised it. Fettering only is an issue if you're arguing you have a right, even though you've not exercised it.
Exactly, the contract is with your LtdCo, that's the whole point. Most of us have the Missus (or whatever) on the books as well, so they're perfect for this.