Part performance is but one potential cause of action, albeit a good one.
There's also undue influence, unconscientious dealings, and constructive trusts, to consider.
On the remedy side you need to think about equitable compensation, equitable damages, and possibly an account of profits if the property increased in value.
If going down the trust path, you then need to trace money.
You should be thinking strategy:
- do you plead one cause of action, or multiple.
- which actions, if any, influence/avoid the statute of limitations.
- what remedies are available for which actions
Keeping it simple - part performance/compensation has cost advantages, but will it obtain the best result? Does keeping it simple jeopardise your case because part performance has a narrow legal definition and it may be struck out whereas a constructive trust may be easier to prove?
Then you have the practical side to consider:
- do you go to the District Court, or Supreme Court.
- how to you structure your claim
- how do you structure your pleadings
- what remedies/orders are you requesting
I understand your concern about legal costs, and frustration about being diddled by the PILs, but do think carefully before deciding on a course of action.
What I have listed above is not necessarily exhaustive, and just my opinion.