My recommendation is absolutely simple. Do your homework first.
Every carpenter knows that you measure twice before sawing. And everyone knows Mr. Møller's principle of due diligence. Sun Tzu says that the wise general does all his calculations in the temple, not on the battlefield.
I could go on, you know what I mean. There is a lot of wisdom to be gained in old virtues and this also applies to an ERP project.
Few companies have a team of ready-to-start resources sitting around waiting for an ERP project. They need to be taken ‘into operation’ and will typically eat up the total capacity and are not necessarily quite up to the beat with the latest technology or how to run an ERP project ashore.
So you can be on the verge of ‘quick fixes’ where suppliers or consulting houses promise that you can dramatically compress and accelerate all or part of the preparation. Or even worse, feel tempted to make extremely rigid contracts where you try to place the entire responsibility for success with the supplier ("You are the experts").
Here I have to emphasise that no matter who you get to help you and no matter what methods and means are brought into play towards a choice of a new platform and a subsequent implementation, the recommendation still applies:
Prepare. Do your homework. The responsibility for the project ultimately lies with you. In your business. No matter how you screw up the contract, no matter who helps you, a failed project and shattered expectations will hit you hardest.
Just like a house built with the left hand rarely hits the contractor as hard as the family who hoped they would move into their dream house where it is raining down through the roof and there is mold on the floor.
As a customer, you must prepare properly and take a high degree of co-responsibility, which does not mean I advocate for exemption from liability of your suppliers. On the contrary. They must be 100% at the top and involved in the responsibility for an ERP project. They must have the right skills, the right profiles, and the right time. Expectations must be high! Everything else is poison for a project.
However, as a company, you can not renounce the responsibility to prepare yourself properly. It makes you sharper, more mature, and far more robust for the piece of work that awaits. You will be asked 1000 questions in the project process and be challenged on a large number of very basic prerequisites, so the better you are prepared, the easier the project will slide. Even when it gets difficult. Because it does.
May I throw you a house analogy again? It is said that it is only at your third time when building a house that you hit the mark. Why? Because you have practiced and are ready for the previous two. Now I do not know very many who can afford to build 3 houses - few can afford one - but the analogy holds, I think.